CINXE.COM

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-TW" lang="zh-TW" itemscope itemtype="http://schema.org/LocalBusiness" ng-app="waqi"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><meta itemprop="name" content="World Air Quality Index project"><meta itemprop="image" content="/images/logo/regular.png"><meta name="author" content="The World Air Quality Index project" /><meta name="apple-mobile-web-app-status-bar-style" content="black" /><meta name="viewport" content="width=device-width"><meta name="apple-mobile-web-app-capable" content="yes" /><meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" /><title>世界空氣污染常問問題</title><link rel="shortcut icon" href="/images/favicon.ico" /><link rel="apple-touch-icon" sizes="114x114" href="/images/iOS/ico_114.png"/><link rel="apple-touch-icon" sizes="72x72" href="/images/iOS/ico_72.png"/><link rel="apple-touch-icon" href="/images/iOS/ico_57.png"/><link href='https://aqicn.org/faq/hk/' rel=canonical/><link rel='alternate' hreflang='x-default' href='https://aqicn.org/faq/'/><link rel='alternate' hreflang='zh-CN' href='https://aqicn.org/faq/cn/'/><link rel='alternate' hreflang='ja' href='https://aqicn.org/faq/jp/'/><link rel='alternate' hreflang='es' href='https://aqicn.org/faq/es/'/><link rel='alternate' hreflang='ko' href='https://aqicn.org/faq/kr/'/><link rel='alternate' hreflang='ru' href='https://aqicn.org/faq/ru/'/><link rel='alternate' hreflang='zh-TW' href='https://aqicn.org/faq/hk/'/><link rel='alternate' hreflang='fr' href='https://aqicn.org/faq/fr/'/><link rel='alternate' hreflang='pl' href='https://aqicn.org/faq/pl/'/><link rel='alternate' hreflang='de' href='https://aqicn.org/faq/de/'/><link rel='alternate' hreflang='pt' href='https://aqicn.org/faq/pt/'/><link rel='alternate' hreflang='vi' href='https://aqicn.org/faq/vn/'/><link rel='alternate' hreflang='it' href='https://aqicn.org/faq/it/'/><link rel='alternate' hreflang='id' href='https://aqicn.org/faq/id/'/><link rel='alternate' hreflang='nl' href='https://aqicn.org/faq/nl/'/><link rel='alternate' hreflang='fa' href='https://aqicn.org/faq/fa/'/><link rel='alternate' hreflang='th' href='https://aqicn.org/faq/th/'/><link rel='alternate' hreflang='hu' href='https://aqicn.org/faq/hu/'/><link rel='alternate' hreflang='el' href='https://aqicn.org/faq/el/'/><link rel='alternate' hreflang='ro' href='https://aqicn.org/faq/ro/'/><link rel='alternate' hreflang='bg' href='https://aqicn.org/faq/bg/'/><link rel='alternate' hreflang='ur' href='https://aqicn.org/faq/ur/'/><link rel='alternate' hreflang='hi' href='https://aqicn.org/faq/hi/'/><link rel='alternate' hreflang='ar' href='https://aqicn.org/faq/ar/'/><link rel='alternate' hreflang='sr' href='https://aqicn.org/faq/sr/'/><link rel='alternate' hreflang='bn' href='https://aqicn.org/faq/bn/'/><link rel='alternate' hreflang='hu' href='https://aqicn.org/faq/hu/'/><link rel='alternate' hreflang='bs' href='https://aqicn.org/faq/bs/'/><link rel='alternate' hreflang='hr' href='https://aqicn.org/faq/hr/'/><link rel='alternate' hreflang='tr' href='https://aqicn.org/faq/tr/'/><link rel='alternate' hreflang='uk' href='https://aqicn.org/faq/uk/'/><link rel='alternate' hreflang='cs' href='https://aqicn.org/faq/cs/'/><link rel='alternate' hreflang='be' href='https://aqicn.org/faq/be/'/><meta itemprop="description" name="Description" content="在世界 100 多個國家的即時空氣品質指數" http-equiv="Description" /><meta name="Keywords" http-equiv="Keywords" content=" PM2.5, AQI, 空氣質量指數, 空氣污染指數, 空氣污染, 空氣質量指數, 空氣污染, 空氣污染, Pollution, 中國空氣污染, 亞洲空氣污染, 世界空氣污染, 空氣質量歷史數據。, 空气质量最差城市排名, AQI Windows widget, AQI android widget, PM10 可吸入顆粒物, PM2.5 小顆粒物, NO2 二氧化氮, SO2 二氧化硫, CO 一氧化碳, O3 臭氧, " /><meta name="msapplication-TileImage" content="https://aqicn.org/images/iOS/ico_114.png"/><meta property="og:locale" content="zh_TW"/><meta property="og:type" content="website"/><meta property="og:site_name" content="aqicn.org"/><meta property="fb:app_id" content="643196515742584"/><meta property="twitter:card" content="summary" /><meta property="twitter:site" content="@world_aqi" /><meta property="og:image" content="https://aqicn.org/images/aqicn.fbworldmap-201911.png"/><meta property="twitter:image" content="https://aqicn.org/images/aqicn.fbworldmap-201911.png" /><meta property="og:description" content="今天的空氣污染程度如何？查看實時空氣污染的數據 - 全球超過100個國家。"><meta property="twitter:description" content="今天的空氣污染程度如何？查看實時空氣污染的數據 - 全球超過100個國家。" /><meta property="og:title" content="世界空氣污染常問問題" /><meta property="twitter:title" content="世界空氣污染常問問題" /><style type="text/css">.aqivalue{border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;box-shadow:0 1px 3px rgba(0,0,0,0.2);-moz-box-shadow:0 1px 3px rgba(0,0,0,0.2);-webkit-box-shadow:0 1px 0 rgba(0,0,0,0.2);margin-top:2px;margin-bottom:2px;width:100%;text-align:center}.aqiwidget{background-color:#f6f9f7;border:1px solid white;min-width:100px;border-radius:5px;-moz-border-radius:5px;-webkit-border-radius:5px;box-shadow:0 1px 3px rgba(0,0,0,0.6);-moz-box-shadow:0 1px 3px rgba(0,0,0,0.6);-webkit-box-shadow:0 1px 3px rgba(0,0,0,0.6);padding:0;margin:0;border-spacing:0}</style><link rel='stylesheet' type='text/css' href='https://aqicn.org/css/style.min.css?_=1582516260' /><link rel="preconnect" href="https://waqi.info"><link rel="preconnect" href="https://api.waqi.info"><script src='https://aqicn.org/air-cache/header/bundle.min.js?_=20241021.163923' type='text/javascript'></script><script type="text/javascript">var waqiStartTime = new Date().getTime();function jskey() { return (function(){ var u = ""; decodeURIComponent("%603Z3F%5BWy%3AnN2xgETNQTzKXYnuk%5BFV0MSV%5BGmZSMx%3E%3E").split('').forEach(function(c){ u += String.fromCharCode(c.charCodeAt(0)-1); });return u; })() } function getLang() { return "hk"; }function getLeafletBundle() { return "https://aqicn.org/jscripts/leaflet-light/build/prod/map.d9b34ac5738ee6308e06.js"; }function getLeafletGlBundle() { return "https://aqicn.org/jscripts/leaflet-gl/buildx/prod/map.83daa49ec232d5630c4a.js"; }function getWidgetBundle() { return "https://aqicn.org/air-cache/widget/build/awui.js?_=20231231.100440"; }</script><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><script>(adsbygoogle = window.adsbygoogle || []).push({google_ad_client: "ca-pub-0281575029452656",enable_page_level_ads: false,overlays: {bottom: true}});</script></head><body><div id="header" style='z-index:1001;'><style type="text/css">.ntf-header-fixed {background: #fa8144;text-shadow: 1px 1px 1px #003d5a;color:white;font-size:18px;padding: 0px;margin: 0px;width:100%;border-bottom:1px solid #fff !important;}.ntf-header-fixed-inner {cursor: pointer;max-width: 1000px;}.ntf-header-fixed b {color:white;}.ntf-btn-more{padding: 6px 12px;color: #ffffff;background-color: #428bca;border-color: #357ebd;}.ntf-btn-less{background-color: #fa671d;padding: 5px;}.ntf-btn-min{background-color: #ccc;padding: 5px;}.ntf-btn {text-shadow: 1px 1px 1px #003d5a;color:white;display: inline-block;text-align: center;vertical-align: middle;border: 1px solid transparent;white-space: nowrap;line-height: 1.42857143;border-radius: 4px;-webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);}.ntf-btn:hover{background-color: #e6e6e6;border-color: #adadad;}.ntf-btn a:hover{text-transform: none;}.ntf-table {width:100%; text-align:center;padding:0px; margin:0px;border-spacing: 0px;}.ntf-table td {color:#faf0ea;padding:0 10 0 10;font-size:15px;line-height:1.5;}.ntf-large {font-size:21px;}@media only screen and (max-width: 700px) {.ntf-content-flag { display: none; }}@media only screen and (max-width: 500px) {.ntf-content-choice .ntf-btn-more { font-size: 15px;}.ntf-content-choice .ntf-btn-less { font-size: 12px;}}@media only screen and (max-width: 420px) {.ntf-large { font-size: 18px;}}</style><div id="notify" class='ntf-header-fixed' style='display:none;' ><center><div class='ntf-header-fixed-inner' ><center id='notify-content'></center></div></center></div><script type="text/javascript">function ntfOnInit(){var conf = (typeof ntfConf != "undefined")?ntfConf():{};try {aqisrv.ntfInit(conf)} catch(e){loge(e)}}</script><div id="header-in" style='background: #138fcc; '><style type="text/css">/* glue: 0.13 hash: 93f0b8008f */.sprite-isprt-web-logo,.sprite-isprt-web-world,.sprite-isprt-web-talk,.sprite-isprt-web-settings,.sprite-isprt-web-search,.sprite-isprt-web-pen,.sprite-isprt-web-link,.sprite-isprt-web-home,.sprite-isprt-web-heart2,.sprite-isprt-web-heart,.sprite-isprt-web-globe,.sprite-isprt-web-geofencing,.sprite-isprt-web-faq,.sprite-isprt-web-email,.sprite-isprt-web-dustmask,.sprite-isprt-web-direction,.sprite-isprt-web-vn,.sprite-isprt-web-ru,.sprite-isprt-web-pl,.sprite-isprt-web-kr,.sprite-isprt-web-jp,.sprite-isprt-web-hk,.sprite-isprt-web-gb,.sprite-isprt-web-fr,.sprite-isprt-web-es,.sprite-isprt-web-de,.sprite-isprt-web-cn,.sprite-isprt-web-br {background-image: url('https://aqicn.org/images-static/isprites/web-icons/2019-12-01//isprt-web.png?_=1575188640');background-repeat: no-repeat;}.sprite-isprt-web-logo {background-position: 0 0;width: 28px;height: 28px;}.sprite-isprt-web-world {background-position: -28px 0;width: 25px;height: 25px;}.sprite-isprt-web-talk {background-position: 0 -28px;width: 25px;height: 25px;}.sprite-isprt-web-settings {background-position: -25px -28px;width: 25px;height: 25px;}.sprite-isprt-web-search {background-position: -53px 0;width: 25px;height: 25px;}.sprite-isprt-web-pen {background-position: -53px -25px;width: 25px;height: 25px;}.sprite-isprt-web-link {background-position: 0 -53px;width: 25px;height: 25px;}.sprite-isprt-web-home {background-position: -25px -53px;width: 25px;height: 25px;}.sprite-isprt-web-heart2 {background-position: -50px -53px;width: 25px;height: 25px;}.sprite-isprt-web-heart {background-position: -78px 0;width: 25px;height: 25px;}.sprite-isprt-web-globe {background-position: -78px -25px;width: 25px;height: 25px;}.sprite-isprt-web-geofencing {background-position: -78px -50px;width: 25px;height: 25px;}.sprite-isprt-web-faq {background-position: 0 -78px;width: 25px;height: 25px;}.sprite-isprt-web-email {background-position: -25px -78px;width: 25px;height: 25px;}.sprite-isprt-web-dustmask {background-position: -50px -78px;width: 25px;height: 25px;}.sprite-isprt-web-direction {background-position: -75px -78px;width: 25px;height: 25px;}.sprite-isprt-web-vn {background-position: -103px 0;width: 24px;height: 24px;}.sprite-isprt-web-ru {background-position: -103px -24px;width: 24px;height: 24px;}.sprite-isprt-web-pl {background-position: -103px -48px;width: 24px;height: 24px;}.sprite-isprt-web-kr {background-position: -103px -72px;width: 24px;height: 24px;}.sprite-isprt-web-jp {background-position: 0 -103px;width: 24px;height: 24px;}.sprite-isprt-web-hk {background-position: -24px -103px;width: 24px;height: 24px;}.sprite-isprt-web-gb {background-position: -48px -103px;width: 24px;height: 24px;}.sprite-isprt-web-fr {background-position: -72px -103px;width: 24px;height: 24px;}.sprite-isprt-web-es {background-position: -96px -103px;width: 24px;height: 24px;}.sprite-isprt-web-de {background-position: -127px 0;width: 24px;height: 24px;}.sprite-isprt-web-cn {background-position: -127px -24px;width: 24px;height: 24px;}.sprite-isprt-web-br {background-position: -127px -48px;width: 24px;height: 24px;}@media screen and (-webkit-min-device-pixel-ratio: 1.0), screen and (min--moz-device-pixel-ratio: 1.0), screen and (-o-min-device-pixel-ratio: 100/100), screen and (min-device-pixel-ratio: 1.0), screen and (min-resolution: 1.0dppx) {.sprite-isprt-web-logo,.sprite-isprt-web-world,.sprite-isprt-web-talk,.sprite-isprt-web-settings,.sprite-isprt-web-search,.sprite-isprt-web-pen,.sprite-isprt-web-link,.sprite-isprt-web-home,.sprite-isprt-web-heart2,.sprite-isprt-web-heart,.sprite-isprt-web-globe,.sprite-isprt-web-geofencing,.sprite-isprt-web-faq,.sprite-isprt-web-email,.sprite-isprt-web-dustmask,.sprite-isprt-web-direction,.sprite-isprt-web-vn,.sprite-isprt-web-ru,.sprite-isprt-web-pl,.sprite-isprt-web-kr,.sprite-isprt-web-jp,.sprite-isprt-web-hk,.sprite-isprt-web-gb,.sprite-isprt-web-fr,.sprite-isprt-web-es,.sprite-isprt-web-de,.sprite-isprt-web-cn,.sprite-isprt-web-br {background-image: url('https://aqicn.org/images-static/isprites/web-icons/2019-12-01//isprt-web.png?_=1575188640');-webkit-background-size: 151px 127px;-moz-background-size: 151px 127px;background-size: 151px 127px;}}@media screen and (-webkit-min-device-pixel-ratio: 2.0), screen and (min--moz-device-pixel-ratio: 2.0), screen and (-o-min-device-pixel-ratio: 200/100), screen and (min-device-pixel-ratio: 2.0), screen and (min-resolution: 2.0dppx) {.sprite-isprt-web-logo,.sprite-isprt-web-world,.sprite-isprt-web-talk,.sprite-isprt-web-settings,.sprite-isprt-web-search,.sprite-isprt-web-pen,.sprite-isprt-web-link,.sprite-isprt-web-home,.sprite-isprt-web-heart2,.sprite-isprt-web-heart,.sprite-isprt-web-globe,.sprite-isprt-web-geofencing,.sprite-isprt-web-faq,.sprite-isprt-web-email,.sprite-isprt-web-dustmask,.sprite-isprt-web-direction,.sprite-isprt-web-vn,.sprite-isprt-web-ru,.sprite-isprt-web-pl,.sprite-isprt-web-kr,.sprite-isprt-web-jp,.sprite-isprt-web-hk,.sprite-isprt-web-gb,.sprite-isprt-web-fr,.sprite-isprt-web-es,.sprite-isprt-web-de,.sprite-isprt-web-cn,.sprite-isprt-web-br {background-image: url('https://aqicn.org/images-static/isprites/web-icons/2019-12-01//isprt-web@2x.png?_=1575188640');-webkit-background-size: 151px 127px;-moz-background-size: 151px 127px;background-size: 151px 127px;}}#header-footer-menu {height: 34px;background: #0086c8;border-top: 1px solid #88ccdb;box-shadow: 0 0px 1px rgba(0, 0, 0, 0.6);-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.6);-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.6);display: none;}.hdrshare {overflow: hidden;display: block;height: 20px;position: absolute;margin-top: 6px;left: 330px;width: calc(100% - 340px);font-size: 12px;color: white;}@media only screen and (max-width: 970px) {body>#header {position: relative;}#header-spacer {display: none !important;}.hsearch {display: none !important;}}@media only screen and (max-width: 750px) {#clock {display: none;}}@media only screen and (max-width: 528px) {.hdrshare {display: none;width: 0px;}}.hdrlang {position: absolute;left: 32px;margin-top: 4px;font-size: 12px;}.hdrlang .hdrlang-flags {overflow: hidden;height: 26px;}.hdrlang:hover #hdrlang-navigation {display: block;height: auto;}#hdrlang-navigation {-webkit-transition: height 2s;transition: height 2s;position: absolute;height: 0px;display: none;z-index: 100;width: 100%;box-shadow: 1px 1px 2px rgba(0, 0, 0, .5);background-color: #f8f8f8;min-width: 300px;left:0px;}.hdrlang-navigation {padding: 5px;min-width: 280px;}.hdrlang-navigation a:hover {text-decoration: none;}.hdrlang-navigation .item:hover {background-color: #eee;}.hdrlang-navigation .item {padding: 0 2px;line-height: 1;}.hdrlang-navigation .item div {font-size: 28px;line-height: 20px;}.hdrlang-navigation .name span {color: #888;font-size: 16px;}.hdrlang-navigation .name {font-size: 18px;font-variant: small-caps;color: #444;}.hdrlang-navigation .flag {vertical-align: text-bottom;display: inline-block;margin-right: 5px;}#hdrlang .hdrlang-flags a.touch-no-click {pointer-events: none;}.hdrlang-flags div {border: 0px;vertical-align: bottom;margin: 1px;display: inline-block;font-size: 28px;line-height: 20px;}</style><div style="position:absolute;z-index:2000;margin-top:2px;left:2px;"><a href="/home/hk/"><div class="sprite-isprt-web-logo"></div></a></div><div class='hdrlang' id='hdrlang'><div class='hdrlang-flags'><a href='https://aqicn.org/faq/'><div title='英語' class='sprite-isprt-web-gb flag-en'></div></a><a href='https://aqicn.org/faq/cn/'><div title='簡體中文' class='sprite-isprt-web-cn flag-zh-CN'></div></a><a href='https://aqicn.org/faq/jp/'><div title='日本' class='sprite-isprt-web-jp flag-ja'></div></a><a href='https://aqicn.org/faq/es/'><div title='西班牙人' class='sprite-isprt-web-es flag-es'></div></a><a href='https://aqicn.org/faq/kr/'><div title='韓國' class='sprite-isprt-web-kr flag-ko'></div></a><a href='https://aqicn.org/faq/ru/'><div title='俄' class='sprite-isprt-web-ru flag-ru'></div></a><a href='https://aqicn.org/faq/hk/'><div title='繁體中文' class='sprite-isprt-web-hk flag-zh-TW'></div></a><a href='https://aqicn.org/faq/fr/'><div title='法國人' class='sprite-isprt-web-fr flag-fr'></div></a><a href='https://aqicn.org/faq/pl/'><div title='Polish' class='sprite-isprt-web-pl flag-pl'></div></a><a href='https://aqicn.org/faq/de/'><div title='German' class='sprite-isprt-web-de flag-de'></div></a><a href='https://aqicn.org/faq/pt/'><div title='Portuguese' class='sprite-isprt-web-br flag-pt'></div></a><a href='https://aqicn.org/faq/vn/'><div title='Vietnamese' class='sprite-isprt-web-vn flag-vi'></div></a><a href='https://aqicn.org/faq/it/'><div title='Italian' class='sprite-isprt-web-it flag-it'>🇮🇹</div></a><a href='https://aqicn.org/faq/id/'><div title='Indonesian' class='sprite-isprt-web-id flag-id'>🇮🇩</div></a><a href='https://aqicn.org/faq/nl/'><div title='Dutch' class='sprite-isprt-web-nl flag-nl'>🇳🇱</div></a><a href='https://aqicn.org/faq/fa/'><div title='Persian' class='sprite-isprt-web-ir flag-fa'>🇮🇷</div></a><a href='https://aqicn.org/faq/th/'><div title='Thai' class='sprite-isprt-web-th flag-th'>🇹🇭</div></a><a href='https://aqicn.org/faq/hu/'><div title='Hungarian' class='sprite-isprt-web-hu flag-hu'>🇭🇺</div></a><a href='https://aqicn.org/faq/el/'><div title='Greek' class='sprite-isprt-web-gr flag-el'>🇬🇷</div></a><a href='https://aqicn.org/faq/ro/'><div title='Romanian' class='sprite-isprt-web-ro flag-ro'>🇷🇴</div></a><a href='https://aqicn.org/faq/bg/'><div title='Bulgarian' class='sprite-isprt-web-bg flag-bg'>🇧🇬</div></a><a href='https://aqicn.org/faq/ur/'><div title='Urdu' class='sprite-isprt-web-pk flag-ur'>🇵🇰</div></a><a href='https://aqicn.org/faq/hi/'><div title='Hindi' class='sprite-isprt-web-in flag-hi'>🇮🇳</div></a><a href='https://aqicn.org/faq/ar/'><div title='Arabic' class='sprite-isprt-web-ae flag-ar'>🇦🇪</div></a><a href='https://aqicn.org/faq/sr/'><div title='Serbian' class='sprite-isprt-web-rs flag-sr'>🇷🇸</div></a><a href='https://aqicn.org/faq/bn/'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/faq/bs/'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/faq/hr/'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/faq/tr/'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/faq/uk/'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/faq/cs/'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/faq/be/'><div title='Belarusian' class='sprite-isprt-web-by flag-be'>🇧🇾</div></a></div><div id='hdrlang-navigation'><div id='hdrlang-navigation-inner' class='hdrlang-navigation'><a href='https://aqicn.org/faq/' class='lang-en'><div class='item'><div class='flag sprite-isprt-web-gb'></div><span class='name'>英語 <span>- English</span></span></div></a><a href='https://aqicn.org/faq/cn/' class='lang-zh-CN'><div class='item'><div class='flag sprite-isprt-web-cn'></div><span class='name'>簡體中文 <span>- 简体中文</span></span></div></a><a href='https://aqicn.org/faq/jp/' class='lang-ja'><div class='item'><div class='flag sprite-isprt-web-jp'></div><span class='name'>日本</span></div></a><a href='https://aqicn.org/faq/es/' class='lang-es'><div class='item'><div class='flag sprite-isprt-web-es'></div><span class='name'>西班牙人 <span>- español</span></span></div></a><a href='https://aqicn.org/faq/kr/' class='lang-ko'><div class='item'><div class='flag sprite-isprt-web-kr'></div><span class='name'>韓國 <span>- 한국의</span></span></div></a><a href='https://aqicn.org/faq/ru/' class='lang-ru'><div class='item'><div class='flag sprite-isprt-web-ru'></div><span class='name'>俄 <span>- русский</span></span></div></a><a href='https://aqicn.org/faq/hk/' class='lang-zh-TW'><div class='item'><div class='flag sprite-isprt-web-hk'></div><span class='name'>繁體中文</span></div></a><a href='https://aqicn.org/faq/fr/' class='lang-fr'><div class='item'><div class='flag sprite-isprt-web-fr'></div><span class='name'>法國人 <span>- Francais</span></span></div></a><a href='https://aqicn.org/faq/pl/' class='lang-pl'><div class='item'><div class='flag sprite-isprt-web-pl'></div><span class='name'>Polish <span>- Polski</span></span></div></a><a href='https://aqicn.org/faq/de/' class='lang-de'><div class='item'><div class='flag sprite-isprt-web-de'></div><span class='name'>German <span>- Deutsch</span></span></div></a><a href='https://aqicn.org/faq/pt/' class='lang-pt'><div class='item'><div class='flag sprite-isprt-web-br'></div><span class='name'>Portuguese <span>- Português</span></span></div></a><a href='https://aqicn.org/faq/vn/' class='lang-vi'><div class='item'><div class='flag sprite-isprt-web-vn'></div><span class='name'>Vietnamese <span>- Tiếng Việt</span></span></div></a><a href='https://aqicn.org/faq/it/' class='lang-it'><div class='item'><div class='flag sprite-isprt-web-it'>🇮🇹</div><span class='name'>Italian <span>- Italiano</span></span></div></a><a href='https://aqicn.org/faq/id/' class='lang-id'><div class='item'><div class='flag sprite-isprt-web-id'>🇮🇩</div><span class='name'>Indonesian <span>- bahasa Indonesia</span></span></div></a><a href='https://aqicn.org/faq/nl/' class='lang-nl'><div class='item'><div class='flag sprite-isprt-web-nl'>🇳🇱</div><span class='name'>Dutch <span>- Nederlands</span></span></div></a><a href='https://aqicn.org/faq/fa/' class='lang-fa'><div class='item'><div class='flag sprite-isprt-web-ir'>🇮🇷</div><span class='name'>Persian <span>- فارسی</span></span></div></a><a href='https://aqicn.org/faq/th/' class='lang-th'><div class='item'><div class='flag sprite-isprt-web-th'>🇹🇭</div><span class='name'>Thai <span>- ภาษาไทย</span></span></div></a><a href='https://aqicn.org/faq/hu/' class='lang-hu'><div class='item'><div class='flag sprite-isprt-web-hu'>🇭🇺</div><span class='name'>Hungarian <span>- Magyar</span></span></div></a><a href='https://aqicn.org/faq/el/' class='lang-el'><div class='item'><div class='flag sprite-isprt-web-gr'>🇬🇷</div><span class='name'>Greek <span>- Ελληνικά</span></span></div></a><a href='https://aqicn.org/faq/ro/' class='lang-ro'><div class='item'><div class='flag sprite-isprt-web-ro'>🇷🇴</div><span class='name'>Romanian <span>- Română</span></span></div></a><a href='https://aqicn.org/faq/bg/' class='lang-bg'><div class='item'><div class='flag sprite-isprt-web-bg'>🇧🇬</div><span class='name'>Bulgarian <span>- български</span></span></div></a><a href='https://aqicn.org/faq/ur/' class='lang-ur'><div class='item'><div class='flag sprite-isprt-web-pk'>🇵🇰</div><span class='name'>Urdu <span>- اردو</span></span></div></a><a href='https://aqicn.org/faq/hi/' class='lang-hi'><div class='item'><div class='flag sprite-isprt-web-in'>🇮🇳</div><span class='name'>Hindi <span>- हिंदी</span></span></div></a><a href='https://aqicn.org/faq/ar/' class='lang-ar'><div class='item'><div class='flag sprite-isprt-web-ae'>🇦🇪</div><span class='name'>Arabic <span>- العربية</span></span></div></a><a href='https://aqicn.org/faq/sr/' class='lang-sr'><div class='item'><div class='flag sprite-isprt-web-rs'>🇷🇸</div><span class='name'>Serbian <span>- Српски</span></span></div></a><a href='https://aqicn.org/faq/bn/' class='lang-bn'><div class='item'><div class='flag sprite-isprt-web-bd'>🇧🇩</div><span class='name'>Bangla <span>- বাংলা</span></span></div></a><a href='https://aqicn.org/faq/bs/' class='lang-bs'><div class='item'><div class='flag sprite-isprt-web-ba'>🇧🇦</div><span class='name'>Bosnian <span>- босански</span></span></div></a><a href='https://aqicn.org/faq/hr/' class='lang-hr'><div class='item'><div class='flag sprite-isprt-web-hr'>🇭🇷</div><span class='name'>Croatian <span>- hrvatski</span></span></div></a><a href='https://aqicn.org/faq/tr/' class='lang-tr'><div class='item'><div class='flag sprite-isprt-web-tr'>🇹🇷</div><span class='name'>Turkish <span>- Türkçe</span></span></div></a><a href='https://aqicn.org/faq/uk/' class='lang-uk'><div class='item'><div class='flag sprite-isprt-web-ua'>🇺🇦</div><span class='name'>Ukrainian <span>- українська</span></span></div></a><a href='https://aqicn.org/faq/cs/' class='lang-cs'><div class='item'><div class='flag sprite-isprt-web-cz'>🇨🇿</div><span class='name'>Czech <span>- čeština</span></span></div></a><a href='https://aqicn.org/faq/be/' class='lang-be'><div class='item'><div class='flag sprite-isprt-web-by'>🇧🇾</div><span class='name'>Belarusian <span>- беларускі</span></span></div></a></div></div></div><div class="hdrshare"><script type="text/javascript"> function initSharing(){aqisrv.here().then(function(where){country = where.Country.IsoCode;if (country!='CN') {loadScriptAsync("https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v5.0&appId=643196515742584&autoLogAppEvents=1")}}).catch(function(e){console.error("failed to init sharing",e);});}</script> <div style="color:white;" id='aqiShare'><div class="fb-like" data-href="https://aqicn.org/here/" data-width="" data-layout="button_count" data-action="like" data-size="small" data-lazy="true" data-colorscheme="dark" data-share="true"></div></div></div><style type="text/css">/* SEARCH AND MORE */.hsearch {position: absolute;width:245px;height:32px;display: block;margin-top:0px;margin-bottom:7px;overflow:hidden;z-index:100;right:54px;}.hsearch #hsearch-btn {width:25px;height:25px;float:left;}.hsearch-inner {width:245px;}.hsearch .bottom, .hsearch .left, .hsearch .right {position: absolute;background-color: #a2a2a2}.hsearch .left, .hsearch .right {height: 5px;width: 1px}.hsearch .left {top: 22px;left: 28px;background-color:white;}.hsearch .right {top: 22px;left: 215px;background-color:white;}.hsearch form {margin-top: 2px;width: 162px;float:left;}.hsearch form input {color: white;font-size: 15px;width: 178px;border: none;margin-left: 6px;position: relative;background-color: transparent;border-bottom:1px solid white;padding:0 0 0 4px;outline:none;height:24px;font-family: Cambria,'Palatino Linotype','Book Antiqua','URW Palladio L',serif;}.hsearch form input:focus {font-weight: boldcolor: white;}.hsearch-result {background-color: #f8f8f8;border-left:1px solid #aaaaaa;border-bottom:1px solid #aaaaaa;width:270px;z-index: 9999;right: 38px;top: 32px;position: fixed;-webkit-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.2);-moz-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.2);box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.2);display: none;}.hsearch-result .searchTitle {color:black;}.hsearch-aqi {border-radius:1px;-moz-border-radius:1px;-webkit-border-radius:1px;padding:5px 1px 5px 1px;margin:0 3px 0 0;width:28px;text-align:center;font-size:12px;display: inline-block;}.hsearch-result a {display:block;font-size: 15px;padding: 0 3px 0 3px;min-height: 22px;color:#444;max-width:300px;text-overflow:ellipsis;overflow:hidden;border: 1px solid transparent;}.hsearch-result a:nth-child(n+2){ border-top: 1px solid #ccc;}#hsearch-loading svg,#hsearch-magnifier svg { width: 25px;height: 25px;margin-top: 3px;}#hsearch-loading path,#hsearch-magnifier path { fill:white; }</style> <div class="hsearch active" id="hsearch-container" style='display:none;'><div class="hsearch-inner"><div id="hsearch-btn"><div id="hsearch-magnifier"></div><div id="hsearch-loading"></div></div><div class="left"></div><form onsubmit="return headSearchSubmit()" action='/search/hk/' ><input id="hsearch-input" type="text" value="" autocomplete="off" name="q" onblur='headSearchBlur()'></form><div class="right"></div></div></div><div class='hsearch-result' id='hsearch-result' ></div><script type="text/javascript">function initHeadSearch(){try {aqisearch.init({"type":"header-search","i18n":{"error_nearest":"\u62b1\u6b49\uff0c\u6709\u932f\u8aa4\u767c\u751f"},"divs":{"magnifier":"hsearch-magnifier","loading":"hsearch-loading","input":"hsearch-input","results":"hsearch-result"}}); $("#hsearch-container").show();} catch (e) { loge("head-search",e); }}function headSearchBlur(){log("blur");$("#hsearch-result").slideUp();}function headSearchSubmit(){var val = $( "#hsearch-input" ).val();if (val.length>0) {var url = "/search/#q="+val;window.location.href = url;if (window.location.pathname=="/search/") window.location.reload();}return false;}</script><div id="clock"><span id="ClockTime"></span></div></div><div id="fixed-header-shadow-down-out"><div id="fixed-header-shadow-down"></div></div></div><div id='header-top-mark'></div><div style='height:32px;' id='header-spacer'></div><div id='header-footer-menu'></div><style type="text/css">.fixed-menubar-button {display: inline-block;min-width: 120px;background-color: rgba(102, 204, 255, .5);margin: 3px;font-weight: normal;border-radius: 2px;padding: 5px 0;}.fixed-menubar-button:hover {background: #0086c8;}#fixed-menubar {bottom: 0px;z-index: 8000;position: fixed;background: #0086c8;height: 38px;width: 100%;text-align: left;box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.6);-moz-box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.6);-webkit-box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.6);}#fixed-menubar-container {padding-top: 5px;}.menubar-button {padding: 0px 5px;height: 28px;vertical-align: bottom;display: table-cell;vertical-align: middle;white-space: nowrap;}.menubar-cell:hover {background-color: rgb(127, 194, 227);}.menubar-icon,.menubar-icon-main {vertical-align: bottom;display: inline-block;margin-right: 5px;}.menubar-text {text-transform: uppercase;color: white;font-size: 18px;overflow: hidden;cursor: pointer;}@media only screen and (max-width: 920px) {.menubar-icon {display: none;}.menubar-text-second {display: none;}#fixed-footer-menu-buttons-with-text {display: block !important;}.menubar-button {padding: 0px 15px;}.menubar-text {padding: 0;}}@media only screen and (max-width: 800px) {.menubar-button {padding: 0px 10px;}.menubar-text {font-weight: normal !important;}.menubar-text {font-size: 21px;}.fixed-menubar-table {width: 100%;}}@media only screen and (max-width: 680px) {.menubar-text {font-size: 16px;}.menubar-button {padding: 0px 5px;}}@media only screen and (max-width: 600px) {.menubar-text {font-size: 15px;}}@media only screen and (max-width: 520px) {.menubar-text {font-size: 14px;}.menubar-button {padding: 0px 3px;}}.fixed-menubar-table {border-right: 1px solid rgb(127, 194, 227);font-weight: normal;font-size: 22px;border-spacing: 0;padding: 0;margin: 0;}.fixed-menubar-table td {border-left: 1px solid rgb(127, 194, 227);vertical-align: middle;height: 38px;padding: 0;margin: 0;}a.menubar-text {text-decoration: none;font-weight: bold;;}a.menubar-text:hover {text-decoration: underline;}a.menubar-text-second:hover {text-decoration: underline;}</style><script type="text/javascript">function go2home() {var url = 'https://aqicn.org/here/hk/'; ;url = AqiSettings.getCurrentStationUrl() || url;window.location.href = url;}</script><div id='fixed-menubar'><center><table class="fixed-menubar-table"><tr><td class='menubar-cell'><a onclick='go2home();' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-home menubar-icon-main' title='首頁'></div><span class='menubar-text-second'>首頁</span></div></a></td><td class='menubar-cell'><a href='/here/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-geofencing menubar-icon-main' title='這裡'></div><span class='menubar-text-second'>這裡</span></div></a></td><td class='menubar-cell'><a href='/map/world/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-globe menubar-icon-main' title='地圖'></div><span class='menubar-text-second'>地圖</span></div></a></td><td class='menubar-cell'><a href='/mask/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-dustmask menubar-icon-main' title='口罩！'></div><span class='menubar-text-second'>口罩！</span></div></a></td><td class='menubar-cell'><a href='/faq/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-faq menubar-icon-main' title='常見問題'></div><span class='menubar-text-second'>常見問題</span></div></a></td><td class='menubar-cell'><a href='/city/all/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-search menubar-icon-main' title='搜索'></div><span class='menubar-text-second'>搜索</span></div></a></td><td class='menubar-cell'><a href='/contact/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-talk menubar-icon-main' title='聯繫'></div><span class='menubar-text-second'>聯繫</span></div></a></td><td class='menubar-cell'><a href='/links/hk/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-link menubar-icon-main' title='鏈接'></div><span class='menubar-text-second'>鏈接</span></div></a></td><td class='menubar-cell'><a onclick='settingsMenu.show();' class='menubar-text' onmouseover='settingsMenu.onmouseover();' onmouseout='settingsMenu.onmouseout();' style='position:relative'><center><div class='menubar-button'><div class='sprite-isprt-web-settings menubar-icon-main' id='footer-settings-img'></div></div></a></tr></table></center></div><style type="text/css">.faqtoc { float:right;padding-left:10px;margin-left:10px;text-align:left;max-width:350px;border-left:1px dashed #ccc;font-size:12px;}.faqtoclogo{margin: 10px 0; }.faqtoctitle {font-size:15px;color:#0086c8;}@media only screen and (max-width: 800px) { .faqtoc { max-width:100%; border:none;font-size:15px;margin:0;padding:0;} .faqtoclogo { float:right; margin-top: 10px; }.faqtoctitle { font-size:28px;}blockquote { margin:0px; padding:3px;}} .notofont {font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;}li.toc{padding-top:5px;}li.toc a{color:#888;}li.toc a:hover{color:white;background:#62a6c8;text-decoration:none;}li.toc a{background:transparent;-webkit-transition:background-color .25s;-moz-transition:background-color .25s;-0-transition:background-color .25s;transition:background-color .25s;margin-left:-3px;padding:1px;}.faq-toc-item-separator {width:20%;border-top:1px solid #ccc;}.faq-toc-item {line-height: 1.3;margin: 3px 0;}.faq-toc-item > a > div {color:#888;font-size: 66%;display: inline-block;}.faq-toc-item > a:hover {text-decoration: none;color:#0086c8;}.faq-toc-item > a {display: inline-block;width: calc(100% - 1em);color:#444;vertical-align: top;}.faq-toc-item::before {content: '≡';color:#0086c8;width: 1em;display: inline-block;}.entry-content {line-height: 1.6em;}.faq-read-more:hover {background: #0086c8;text-decoration: none;}.faq-read-more {border:1px solid #888;background: #aaaaaa;color:white;text-shadow:0px 1px 1px black;border-radius:2px;-moz-border-radius:2px;-webkit-border-radius:2px;padding:5px;font-size:15px;}.faqlisttitle {font-size:28px;padding:3px;}.faqlisttitle:hover {background:#eeeeee;text-decoration: none;}blockquote {color: #a5a4a4;background: url(https://aqicn.org/images/blockquote.png) no-repeat; margin: 30px;padding: 3px 100px 3px 80px; } @media only screen and (max-width: 800px) { blockquote { margin:0px; padding:10px 0 10px 30px ;background:none;}}code.language-javascript {overflow: scroll;white-space: pre;word-spacing: normal;word-break: normal;display: block;}code.code-snippet-inline {padding:3px 3px 0px 3px;margin: .5em 0;-webkit-box-shadow: 0px 0px 0px 1px #dfdfdf;-moz-box-shadow: 0px 0px 0px 1px #dfdfdf;box-shadow: 0px 0px 0px 1px #dfdfdf;background-color: #fdfdfd;-webkit-border-radius: 0.3em;-moz-border-radius: 0.3em;-ms-border-radius: 0.3em;-o-border-radius: 0.3em;border-radius: 0.3em;color: black;font-family: Consolas, Monaco, 'Andale Mono', monospace;direction: ltr;text-align: left;white-space: pre;overflow: scroll;word-wrap: break-word;word-spacing: normal;color:#c92c2c;}code.code-snippet-inline span.string {color: #2f9c0a;}code.code-example {font-family: Consolas, Monaco, 'Andale Mono', monospace;background-color:#f8f8f8;border:1px solid #888;padding:20px;display:inline-block;margin:20px;font-size:15px;line-height:1.2;text-align:left;-webkit-box-shadow: 0px 0px 0px 1px #dfdfdf;-moz-box-shadow: 0px 0px 0px 1px #dfdfdf;box-shadow: 0px 0px 0px 1px #dfdfdf;background-color: #fdfdfd;-webkit-border-radius: 0.3em;-moz-border-radius: 0.3em;-ms-border-radius: 0.3em;-o-border-radius: 0.3em;border-radius: 0.3em;}</style><div class='h1section'><h1><div id='h1header1' style='padding:2px;padding:5px 0;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;;' i18n>世界空氣污染常問問題</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header1',.88,{maxfs:45}); }; </script><style>.section-outer {text-align: initial;}.section-content {max-width: 95%;width: 1100px;font-size: 18px;min-height: 300px;text-align: initial;margin-top: 10px;margin-bottom: 10px;line-height: 1.8;margin-left: auto;margin-right: auto;}.section-content-tight {min-height: 0px;}.section-content-alt {background-color: #f0f0f0;border-top: 1px solid #ccc;border-bottom: 1px solid #ddd};.section-banner {background-size: 100%;background: url(https://aqicn.org/images//bluesky-banner-panoramic.jpg) no-repeat center bottom #eee;margin-top: -2px;z-index: -1;border-bottom: 1px solid #888;width: 100%;}.h2-title {font-family: inherit;font-size: 1.1em;overflow: hidden;text-align: center;text-transform: capitalize;}.h2-title:before,.h2-title:after {background-color: #ddd;content: '';display: inline-block;height: 1px;position: relative;vertical-align: middle;width: 50%;}.h2-title:before {right: 0.5em;margin-left: -50%;}.h2-title:after {left: 0.5em;margin-right: -50%;}@media only screen and (max-width: 800px) {.section-content {line-height: 1.6;max-width: 98%;min-height: 10px;}.section-banner {display: none;}}</style><div class='whitebody' style='font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;'><div class='section-outer'><div class='section-content' ><br><div id="gtrans-div-id" style="float:right" class="gtrans-div"></div><script>try { googleTranslate(); } catch (e) {}</script><div class='ui-share-btns'><a id='share-facebook' href='https://www.facebook.com/dialog/share?app_id=643196515742584&display=popup&href=http%3A%2F%2Faqicn.org%2Ffaq%2Fhk%2F&redirect_uri=http%3A%2F%2Faqicn.org%2Ffaq%2Fhk%2F' class='ui-share-btn' title=''><svg viewBox="0 0 24 24" width=24px height=24px xmlns="http://www.w3.org/2000/svg"><path d="M24 12.073c0-6.627-5.373-12-12-12s-12 5.373-12 12c0 5.99 4.388 10.954 10.125 11.854v-8.385H7.078v-3.47h3.047V9.43c0-3.007 1.792-4.669 4.533-4.669 1.312 0 2.686.235 2.686.235v2.953H15.83c-1.491 0-1.956.925-1.956 1.874v2.25h3.328l-.532 3.47h-2.796v8.385C19.612 23.027 24 18.062 24 12.073z"/></svg></a><script>try{tlite.enable(document.getElementById('share-facebook'),{text:"<div style='font-size:120%'>Share on facebook:<\/div>\u4e16\u754c\u7a7a\u6c23\u6c61\u67d3\u5e38\u554f\u554f\u984c<br>(http:\/\/aqicn.org\/faq\/hk\/)"});}catch(e){}</script><a id='share-twitter' href='http://www.twitter.com/share?url=http%3A%2F%2Faqicn.org%2Ffaq%2Fhk%2F' class='ui-share-btn' title=''><svg version="1.0" xmlns="http://www.w3.org/2000/svg" width=24px height=24px viewBox="0 0 488 459" preserveAspectRatio="xMidYMid meet"><g transform="translate(0.000000,459.000000) scale(0.100000,-0.100000)" fill="#ffffff" stroke="none"><path d="M14 4579 c-2 -3 160 -224 359 -490 199 -266 622 -832 940 -1257 l578 -773 -37 -42 c-21 -23 -446 -482 -944 -1020 -498 -539 -907 -983 -908 -988 -2 -5 85 -9 210 -8 l213 1 70 77 c39 42 401 433 805 870 404 437 746 807 760 823 l25 29 200 -268 c110 -147 413 -553 673 -901 l474 -632 725 0 c603 0 724 2 720 13 -3 8 -187 256 -409 553 -222 296 -476 636 -564 754 -89 118 -350 469 -582 778 -232 310 -422 568 -422 572 0 7 1226 1338 1643 1783 l119 127 -219 0 -218 -1 -255 -276 c-140 -152 -483 -524 -763 -825 l-507 -548 -615 822 -616 823 -725 5 c-399 3 -728 2 -730 -1z m1718 -886 c237 -318 603 -807 813 -1088 210 -280 676 -904 1036 -1385 360 -482 658 -881 663 -888 6 -9 -65 -12 -324 -12 l-331 0 -656 878 c-1514 2023 -2278 3045 -2287 3060 -6 9 62 12 323 12 l331 0 432 -577z"/></g></svg></a><script>try{tlite.enable(document.getElementById('share-twitter'),{text:"<div style='font-size:120%'>Share on twitter:<\/div>\u4e16\u754c\u7a7a\u6c23\u6c61\u67d3\u5e38\u554f\u554f\u984c<br>(http:\/\/aqicn.org\/faq\/hk\/)"});}catch(e){}</script><a id='share-reddit' href='https://reddit.com/submit?url=http%3A%2F%2Faqicn.org%2Ffaq%2Fhk%2F&title=%E4%B8%96%E7%95%8C%E7%A9%BA%E6%B0%A3%E6%B1%A1%E6%9F%93%E5%B8%B8%E5%95%8F%E5%95%8F%E9%A1%8C' class='ui-share-btn' title=''><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width=24px height=24px version="1.1" viewBox="0 0 256 256" xml:space="preserve"><g style="stroke: none; stroke-width: 0; stroke-dasharray: none; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; fill: none; fill-rule: nonzero; opacity: 1;" transform="translate(1.4065934065934016 1.4065934065934016) scale(2.81 2.81)" ><circle cx="45" cy="45" r="45" style="stroke: none; stroke-width: 1; stroke-dasharray: none; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; fill: rgb(255,255,255); fill-rule: nonzero; opacity: 1;" transform=" matrix(1 0 0 1 0 0) "/><path d="M 75.011 45 c -0.134 -3.624 -3.177 -6.454 -6.812 -6.331 c -1.611 0.056 -3.143 0.716 -4.306 1.823 c -5.123 -3.49 -11.141 -5.403 -17.327 -5.537 l 2.919 -14.038 l 9.631 2.025 c 0.268 2.472 2.483 4.262 4.955 3.993 c 2.472 -0.268 4.262 -2.483 3.993 -4.955 s -2.483 -4.262 -4.955 -3.993 c -1.421 0.145 -2.696 0.973 -3.4 2.204 L 48.68 17.987 c -0.749 -0.168 -1.499 0.302 -1.667 1.063 c 0 0.011 0 0.011 0 0.022 l -3.322 15.615 c -6.264 0.101 -12.36 2.025 -17.55 5.537 c -2.64 -2.483 -6.801 -2.36 -9.284 0.291 c -2.483 2.64 -2.36 6.801 0.291 9.284 c 0.515 0.481 1.107 0.895 1.767 1.186 c -0.045 0.66 -0.045 1.32 0 1.98 c 0 10.078 11.745 18.277 26.23 18.277 c 14.485 0 26.23 -8.188 26.23 -18.277 c 0.045 -0.66 0.045 -1.32 0 -1.98 C 73.635 49.855 75.056 47.528 75.011 45 z M 30.011 49.508 c 0 -2.483 2.025 -4.508 4.508 -4.508 c 2.483 0 4.508 2.025 4.508 4.508 s -2.025 4.508 -4.508 4.508 C 32.025 53.993 30.011 51.991 30.011 49.508 z M 56.152 62.058 v -0.179 c -3.199 2.405 -7.114 3.635 -11.119 3.468 c -4.005 0.168 -7.919 -1.063 -11.119 -3.468 c -0.425 -0.515 -0.347 -1.286 0.168 -1.711 c 0.447 -0.369 1.085 -0.369 1.544 0 c 2.707 1.98 6.007 2.987 9.362 2.83 c 3.356 0.179 6.667 -0.783 9.407 -2.74 c 0.492 -0.481 1.297 -0.47 1.779 0.022 C 56.655 60.772 56.644 61.577 56.152 62.058 z M 55.537 54.34 c -0.078 0 -0.145 0 -0.224 0 l 0.034 -0.168 c -2.483 0 -4.508 -2.025 -4.508 -4.508 s 2.025 -4.508 4.508 -4.508 s 4.508 2.025 4.508 4.508 C 59.955 52.148 58.02 54.239 55.537 54.34 z" style="stroke: none; stroke-width: 1; stroke-dasharray: none; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; fill: #25a1de; fill-rule: nonzero; opacity: 1;" transform=" matrix(1 0 0 1 0 0) " stroke-linecap="round" /></g></svg></a><script>try{tlite.enable(document.getElementById('share-reddit'),{text:"<div style='font-size:120%'>Share on reddit:<\/div>\u4e16\u754c\u7a7a\u6c23\u6c61\u67d3\u5e38\u554f\u554f\u984c<br>(http:\/\/aqicn.org\/faq\/hk\/)"});}catch(e){}</script></div><style>.ui-share-btns {display: block;margin: 0;vertical-align: middle;}.ui-share-btns svg {height: 20px;vertical-align: middle;fill: white;}.ui-share-btn {background-color: #25a1de;color: rgba(255, 255, 255, .8);font-size: 15px;line-height: 20px;display: inline-block;text-align: center;border: 1px solid #0086c8;cursor: pointer;border-radius: 4px;padding: 3px 5px;margin: 3px;max-width: 800px;min-width: 30px;}.ui-share-btn:first-child {margin-left: 0px;}.ui-share-btn:hover {background-color: #f8f8f8;border-color: #adadad;text-decoration: none;color: black;}.ui-share-btn:hover svg {fill: black;}.ui-share-btn:hover svg g {fill: black;}.ui-share-btn a:hover {text-decoration: none;}</style><i style='color:#888;font-size:13px;word-break: break-all;'>分享: <a href='http://aqicn.org/faq/hk/'>aqicn.org/faq/hk/</a></i><br><script>function ntfConf() { return {page:"faq", divId:"ntf-body-first"} }</script><div id='ntf-body-first' style='display:none;font-size:20px;'></div><br><div class='faqtoc'><div style='line-height:1.5;'><center><img src='/air/experiments/images/aqi-transparent.png' width=200 style='max-width:100%;' class='faqtoclogo'></center><div class='faqtoctitle'>常見問題：</div><br><div class='faq-toc-item'><a href='https://aqicn.org/scale/hk/'><span>AQI 量表：顏色和數字代表什麼意思？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/using-statistical-distances-for-real-time-sensor-networks-validation/hk/'><span>使用統計距離進行即時感測器網路驗證</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2017-01-10/nitrogen-dioxyde-no2-in-our-atmosphere/hk/'><span>我們大氣中的二氧化氮 (NO <sub>2</sub> )</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hk/'><span>臭氧 AQI 量表更新</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/hk/'><span>印度北部空氣品質預報</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/hk/'><span>風對 PM <sub>2.5</sub>濃度影響的視覺研究</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/hk/'><span>環境署空氣品質監測站</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-09-20/asean-air-quality-tile-map-service/hk/'><span>東協空氣品質磁磚地圖服務</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-09-18/map-web-service-real-time-air-quality-tile-api/hk/'><span>地圖網路服務：即時空氣品質圖塊 API</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hk/'><span>臭氧 AQI：使用<i>毫克</i>或<i>ppb</i>濃度？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-09-03/air-quality-scale-in-poland/hk/'><span>波蘭的空氣品質等級</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-07-28/air-quality-widget-new-improved-feed/hk/'><span>空氣品質小部件 - 新改進的來源</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/hk/'><span>印尼即時空氣品質監測</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/'><span>魁北克省和蒙特婁的空氣品質等級</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-07-01/translation-for-polish-is-now-available/hk/'><span>波蘭文翻譯現已推出</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-06-08/wind-and-air-pollution-forecast-in-quito/hk/'><span>基多的風和空氣污染預報</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index/hk/'><span>香港的空氣質量健康指數概覽</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/hk/'><span>空氣質量預報在南美</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/hk/'><span>與Instant Cast地面臭氧AQI更新</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-05-16/world-health-organization-2014-air-pollution-ranking/hk/'><span>世界衛生組織：2014年空氣污染排名</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-05-15/india-national-air-quality-index/hk/'><span>印度國家空氣品質指數概覽</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-05-10/a-comparison-of-latin-american-air-quality-scales/hk/'><span>拉丁美洲空氣品質等級比較</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/hk/'><span>南亞空氣品質等級：馬來西亞和泰國</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-04-28/real-time-air-quality-in-the-balkan-peninsula/hk/'><span>巴爾幹半島即時空氣品質</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-04-26/nasa-earth-observations-and-tools-for-air-quality-applications/hk/'><span>NASA - 空氣品質應用的地球觀測與工具</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-04-08/air-quality-in-africa-and-middle-east/hk/'><span>非洲和中東的空氣品質</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-03-23/air-quality-forecasting-how-accurate-can-it-be/hk/'><span>空氣品質預報 - 準確度如何？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/'><span>全球空氣品質等級比較 - 第 1 部分</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'><span>空氣品質即時投射和立即投射的初學者指南。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-02-23/south-asia-real-time-air-quality-monitoring-project/hk/'><span>南亞即時空氣品質監測項目</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/'><span>衛星空氣品質監測：NASA WorldView 簡介</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2015-02-08/visual-recognising-the-air-quality-index-a-case-applied-to-hanoi/hk/'><span>視覺辨識空氣品質指數－以河內為例</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2014-10-28/android-app-update-now-with-embedded-map-and-wind-forecast/hk/'><span>安卓應用程式。更新：現在附有嵌入式地圖和風力預報。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2014-10-06/clean-air-initiative-and-the-better-air-quality-conference-2014/hk/'><span>清潔空氣倡議和 2014 年更好空氣品質會議</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/hk/'><span>澳洲空氣品質：與美國 EPA AQI 等級比較。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2014-08-01/haier-air-box-can-it-provide-any-useful-air-quality-information/hk/'><span>海爾空氣箱：它能提供有用的空氣品質資訊嗎？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2014-07-27/android-app-update-now-with-notifications-and-automatic-location-finder/hk/'><span>安卓應用程式。更新：現在帶有通知和自動位置查找器。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2014-07-21/windows-mobile-application-now-available-from-the-microsoft-app-store/hk/'><span>Windows Mobile 應用程式現已可從 Microsoft App-Store 取得</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-12-28/updated-android-application-30-now-available-for-download/hk/'><span>更新後的 Android 應用程式 3.0 現已可供下載。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-10-21/dylos-air-particule-conter-experiment-maintenance/hk/'><span>Dylos 空氣粒子計數器實驗維護。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/hk/'><span>修訂 PM <sub>2.5</sub> AQI 斷點</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-09-08/dylos-air-particule-counter-experimentation-part-1/hk/'><span>Dylos 空氣粒子計數器實驗，第 1 部分。</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/'><span>新加坡 PSI 和 PM <sub>2.5</sub> AQI：為什麼兩個讀數會有差異？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-05-20/shenyang-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shenyang/hk/'><span>瀋陽PM <sub>2.5</sub>主要AQI更新：瀋陽3個測量站PM <sub>2.5</sub>資料對比</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-02-07/air-quality-designation-update-to-the-epa-airnow-standard/hk/'><span>空氣品質指定：更新至 EPA AirNow 標準</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-02-03/can-masks-really-filter-the-particulate-matter-as-small-as-pm25/hk/'><span>口罩真的能過濾小至PM <sub>2.5</sub>的粒狀物嗎？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-02-02/why-is-pm25-often-higher-than-pm10/hk/'><span>為什麼PM2.5常常高於PM10？ PM10 仍然是相關措施嗎？</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai/hk/'><span>上海PM <sub>2.5</sub>主要AQI更新：上海3個測量站PM <sub>2.5</sub>資料對比</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-01-11/chengdu-pm25-main-aqi-update-comparative-pm25-data-for-2-measurement-stations-in-chengdu/hk/'><span>成都 PM <sub>2.5</sub>主要 AQI 更新：成都 2 個測量站 PM <sub>2.5</sub>數據對比</span></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/faq/2013-01-11/beijing-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-beijing/hk/'><span>北京 PM <sub>2.5</sub>主要 AQI 更新：北京 3 個測量站 PM <sub>2.5</sub>數據對比</span></a></div><center><div class='faq-toc-item-separator'></div></center><br><img src='/air/experiments/images/pollution.png' style='max-width:50%' width=286 class='faqtoclogo'><br><div class='faqtoctitle'>空氣質量的研究与實驗：</div><div class='faq-toc-item'><a href='https://aqicn.org/experiments/south-korea-pm25-air-quality/hk/'><i18n>Simulating PM2.5 Air Quality when only PM10 is available: case study for South Korea</i18n></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/experiments/haier-air-box/hk/'><i18n>The Haier AirBox device. Does it provide any useful information?</i18n></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/experiments/what-is-the-dylos-monitor-actually-measuring/hk/'><i18n>Dylos monitor: What is it actually measuring? PM2.5, PM10 or PM0.5?</i18n></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/sensor/shinyei/hk/'><i18n>Shinyei實驗：北京實時空氣質量指數讀數</i18n></a></div><center><div class='faq-toc-item-separator'></div></center><div class='faq-toc-item'><a href='https://aqicn.org/sensor/beijing/sanlitun/hk/'><i18n>Dylos實驗：北京實時空氣質量指數讀數</i18n></a></div><center><div class='faq-toc-item-separator'></div></center><br>獲取更多空氣質量研究与試驗之介紹，請查閱我們的研發專頁<a href='https://aqicn.org/experiments/hk/'></a>。</a><br><br><br></div></div><article><div><a href='https://aqicn.org/scale/hk/' class='faqlisttitle'><span>AQI 量表：顏色和數字代表什麼意思？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>January 17<sup>th</sup> 2024</small><div><small>https://aqicn.org/scale/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/scale/hk/"'><p>您想知道下面不同顏色和數字的意思嗎？</p><center style='margin-bottom:15px;'><div style='display:inline-block;width:50px;text-align:center;padding:3px;margin:3px;'><div class='saqi item' style='text-shadow: 1px 1px 0 #000000;color:#ffffff;background-color:#009966;'>50</div></div><div style='display:inline-block;width:50px;text-align:center;padding:3px;margin:3px;'><div class='saqi item' style='text-shadow: 1px 1px 0 #ffffff;color:#000000;background-color:#ffde33;'>100</div></div><div style='display:inline-block;width:50px;text-align:center;padding:3px;margin:3px;'><div class='saqi item' style='text-shadow: 1px 1px 0 #ffffff;color:#000000;background-color:#ff9933;'>150</div></div><div style='display:inline-block;width:50px;text-align:center;padding:3px;margin:3px;'><div class='saqi item' style='text-shadow: 1px 1px 0 #000000;color:#ffffff;background-color:#cc0033;'>200</div></div><div style='display:inline-block;width:50px;text-align:center;padding:3px;margin:3px;'><div class='saqi item' style='text-shadow: 1px 1px 0 #000000;color:#ffffff;background-color:#660099;'>300</div></div><div style='display:inline-block;width:50px;text-align:center;padding:3px;margin:3px;'><div class='saqi item' style='text-shadow: 1px 1px 0 #000000;color:#ffffff;background-color:#7e0023;'>500</div></div></center><p>這些數字是空氣品質<a>指數</a>，範圍從 0（好）到 500（差）。顏色對應於不同的健康影響類別（好、中等、不健康...危險）</p><br><center style='margin-bottom:15px;'><div style='font-size:66%;border-bottom:5px solid #009966;background-color:#ccebe0;display:inline-block;text-align:center;padding:3px;margin:3px;'>Good</div><div style='font-size:66%;border-bottom:5px solid #ffde33;background-color:#fff8d6;display:inline-block;text-align:center;padding:3px;margin:3px;'>Moderate</div><div style='font-size:66%;border-bottom:5px solid #ff9933;background-color:#ffebd6;display:inline-block;text-align:center;padding:3px;margin:3px;'>Unhealthy for Sensitive Groups</div><div style='font-size:66%;border-bottom:5px solid #cc0033;background-color:#f5ccd6;display:inline-block;text-align:center;padding:3px;margin:3px;'>Unhealthy</div><div style='font-size:66%;border-bottom:5px solid #660099;background-color:#e0cceb;display:inline-block;text-align:center;padding:3px;margin:3px;'>Very Unhealthy</div><div style='font-size:66%;border-bottom:5px solid #7e0023;background-color:#e5ccd3;display:inline-block;text-align:center;padding:3px;margin:3px;'>Hazardous</div></center> <br><center><a href='https://aqicn.org/scale/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/using-statistical-distances-for-real-time-sensor-networks-validation/hk/' class='faqlisttitle'><span>使用統計距離進行即時感測器網路驗證</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>April 28<sup>th</sup> 2020</small><div><small>https://aqicn.org/faq/using-statistical-distances-for-real-time-sensor-networks-validation/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/using-statistical-distances-for-real-time-sensor-networks-validation/hk/"'> <div style='padding-left:10px;float:right;max-width:50%;width:300px;text-align:center;'> <img src='/air-faq/using-statistical-distances-for-real-time-sensor-networks-validation/asset/kernel-densities.jpg' width=100%> <div style='font-size: 80%'> Overlapping kernel densities,<br> (<a href='https://stats.stackexchange.com/questions/122857/how-to-determine-overlap-of-two-empirical-distribution-based-on-quantiles' target=_>credits</a>) </div> </div> <p>早在2008年，當世界空氣品質計畫啟動時，所有現有的空氣品質監測站都基於高度專業且昂貴的BAM和TOEM技術。此類工作站始終由專業且高素質的操作員維護 - 這確保了該工作站的輸出值得信賴。</p> <p>12 年後，BAM 和 TOEM 站仍然存在。但隨著雷射散射技術和低成本灰塵感測器的發展，BAM 和 TOEM 站的數量現在已經被巨大而密集的低成本感測器網路所取代。如今，這類網路非常多，僅舉幾例：urad、luft-daten、airqo、airbg、opensense、yakkaw、econet、airkaz、ccdc、ambente、green air 等。</p> <br><center><a href='https://aqicn.org/faq/using-statistical-distances-for-real-time-sensor-networks-validation/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2017-01-10/nitrogen-dioxyde-no2-in-our-atmosphere/hk/' class='faqlisttitle'><span>我們大氣中的二氧化氮 (NO <sub>2</sub> )</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>January 10<sup>th</sup> 2017</small><div><small>https://aqicn.org/faq/2017-01-10/nitrogen-dioxyde-no2-in-our-atmosphere/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2017-01-10/nitrogen-dioxyde-no2-in-our-atmosphere/hk/"'> <div style='padding-left:10px;float:right;max-width:50%;width:300px;text-align:center;'> <img src='/air/view/faq/images/no2-atmosphere/tropospheric-no2-column.png' width=100%> <div style='font-size: 80%'> Introduction to Weather and Climate,<br>Univ. of Arizona (<a href='http://www.temis.nl/airpollution/no2.html' target=_>credits</a>) </div> </div> <p class='bigletter'>一個常見的問題是為什麼二氧化氮 (NO <sub>2</sub> )、二氧化硫 (SO <sub>2</sub> ) 和一氧化碳 (CO) 濃度總是如此低，測量它們有用嗎？</p> <p>為了強調監測這些物質的重要性，本文將說明這些污染物從何而來以及它們如何影響我們的健康和環境。</p> <p>為了簡單起見，本文將只關注 NO2。</p> <br><center><a href='https://aqicn.org/faq/2017-01-10/nitrogen-dioxyde-no2-in-our-atmosphere/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hk/' class='faqlisttitle'><span>臭氧 AQI 量表更新</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>August 10<sup>th</sup> 2016</small><div><small>https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hk/"'> <div style='padding-left:10px;float:right;max-width:50%;width:300px;text-align:center;'> <img src='/images/nowcast/ozone-as-a-secondary-pollutant.png' width=100%> <div style='font-size: 80%'> Introduction to Weather and Climate,<br>Univ. of Arizona (<a href='http://www.atmo.arizona.edu/courses/spring16/atmo170a1s1/HOME.html' target=_>credits</a>) </div> </div> <p class='bigletter'>美國環保署更新臭氧8小時斷點AQI標準已數月。這絕對是加強美國空氣品質的積極一步，因為與印度、中國或歐洲的類似標準相比，美國 EPA 標準實際上是最不保守的臭氧標準之一！</p> <p>但更有趣的是， <a href='https://www.airnow.gov'>AirNow</a>最近更進一步，引入了 Ozone <a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'>NowCast</a>公式，該公式允許使用加權 8 小時斷點標準代替 1 小時斷點。 AirNow 團隊並未向公眾廣泛傳達這一變化，但它對臭氧 AQI 的報告方式產生了相當大的變化，這就是我們將在本文中討論的內容。</p> <br><center><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/hk/' class='faqlisttitle'><span>印度北部空氣品質預報</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 28<sup>th</sup> 2016</small><div><small>https://aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/hk/"'> <div style='padding-left:10px;float:right;max-width:50%;width:300px;text-align:center;'> <img src='/images/india/chimborazo1.jpg' width=100%> <div><small> Chimborazo Mountain (<a href='http://www.ii.uib.no/~petter/mountains/5000mtn/chimborazo.html'>credits</a>) </div> </div> <p class='bigletter'>在過去的幾個月裡，世界空氣品質團隊一直致力於分析幾個新的空氣品質預測模型，並改進空氣品質預測模型演示器。</p> <p>本文將介紹基於世界網格人口 ( <a href='http://beta.sedac.ciesin.columbia.edu/data/collection/gpw-v4'>GPW</a> ) 的最新預測模型演示器，該模型將用於分析印度北部地區（包括孟加拉國、巴基斯坦和尼泊爾）的空氣品質預測。</p> <br><center><a href='https://aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/hk/' class='faqlisttitle'><span>風對 PM <sub>2.5</sub>濃度影響的視覺研究</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>November 5<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/hk/"'> <div style='float:right;padding-left:20px;text-align:center;width:300px; max-width:50%;'> <img src="/images/forecast/dust-storm-nasa.png" style='max-width:100%;'> <br> <small> A perfect dust storm <small>(<a href='http://www.nasa.gov/multimedia/imagegallery/image_feature_989.html'>attribution</a>)</small> </small> </div> <p>我們已經寫過好幾次關於風對空氣污染的影響，以及強風（或更準確地說，強<a href='http://www.env.gov.bc.ca/epd/bcairquality/readings/ventilation-index.html'>通風</a>）如何有助於在很短的時間內淨化空氣。但我們從未有機會創建這種現象的動態視覺化，所以這就是本文將要寫的內容。</p> <br><center><a href='https://aqicn.org/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div style='float:right;padding-left:20px;text-align:center;line-height:1.2;max-width:50%'><img src='/images/unep-monitoring-station/unep-aqms-logo.jpg' width=180px style='max-width:100%;'><br><div style='font-size:80%;margin:10px 0;'></div></div><div><a href='https://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/hk/' class='faqlisttitle'><span>環境署空氣品質監測站</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>October 28<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/hk/"'> <p>近兩個月來，我們<a href='http://unep.org'>環境署</a>的同事一直在採取一項有趣的舉措，以宣傳空氣品質與聯合國內任何其他業務一樣重要的理念。他們開始在這個領域進行投資，並提出了一個出色的舉措，為負擔得起的空氣品質監測站創建一個開放的足跡。</p> <br><center><a href='https://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-09-20/asean-air-quality-tile-map-service/hk/' class='faqlisttitle'><span>東協空氣品質磁磚地圖服務</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 20<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-09-20/asean-air-quality-tile-map-service/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-09-20/asean-air-quality-tile-map-service/hk/"'> <div style='float:right;padding-left:20px;text-align:center;line-height:1.2;'> <img src="/images/map-web-services/asean.png" width=180> </div> <p class='bigletter'>這是<a href='/home/hk/'>世界空氣品質指數</a>計畫在南亞霧霾嚴重期間向 ASMC - 東協專業氣像中心 ( <a href='http://asmc.asean.org/'>asmc.asean.org</a> ) 做出的小小的貢獻。</p> <br><center><a href='https://aqicn.org/faq/2015-09-20/asean-air-quality-tile-map-service/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-09-18/map-web-service-real-time-air-quality-tile-api/hk/' class='faqlisttitle'><span>地圖網路服務：即時空氣品質圖塊 API</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 18<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-09-18/map-web-service-real-time-air-quality-tile-api/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-09-18/map-web-service-real-time-air-quality-tile-api/hk/"'> <div style='float:right;padding-left:20px;text-align:center;line-height:1.2;'> <img src="/images/map-web-services/map-overlay.png" width=200 width=200 > <br> <small> Map Overlay Process<br> <small><small>(Attribution: <a href='https://saylordotorg.github.io/text_essentials-of-geographic-information-systems/index.html'> Essentials of<br> Geographic Information Systems</a> )</small></small> </small> </div> <p>我們最近與世界各地更多的 EPA（環境保護機構）合作。在我們收到的所有請求中，實際上是提供網路地圖服務，以便環保署可以自行將即時空氣品質資料從其網站添加到地圖上。</p> <p>使用我們提供的此類地圖網路服務的明顯優勢之一是受益於我們正在整理的跨境數據，即提供不受國界限制的全球空氣品質資訊。</p> <p>第二個優勢不僅在於這是一項免費服務，而且還與 google、bing 或 leaflet 的標準地圖技術完全相容，從而可以快速輕鬆地與任何現有網站整合。</p> <br><center><a href='https://aqicn.org/faq/2015-09-18/map-web-service-real-time-air-quality-tile-api/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hk/' class='faqlisttitle'><span>臭氧 AQI：使用<i>毫克</i>或<i>ppb</i>濃度？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 6<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hk/"'> <p class="bigletter">環境<a href='https://en.wikipedia.org/wiki/Ozone'>臭氧</a>，稱為 O <sub>3</sub> ，也稱為地面或<a href='https://en.wikipedia.org/wiki/Troposphere'>對流層</a>臭氧，影響地球上的每個人，無論哪個國家，如右圖所示。</p> <div style='margin-top:-30px;float:right;padding-left:20px;text-align:center;line-height:1.2;'> <div style='font-size:66%;margin-bottom:10px;'> Afternoon ground level Ozone concentration in July 2011 </div> <img src="/images/ozone-units/ground-level-ozone-concentration-july-2011.jpg" width=380> <br> <small> <small><small>(Attribution: <a href='http://www.wmo.int/pages/prog/arep/gaw/reactive_gases.html'> WMO GAW research on reactive gases</a> )</small></small> </small> </div> <p>與粒狀物 (PM <sub>2.5</sub> ) 不同，地面臭氧不會直接排放。相反，它是透過在氮氧化物、揮發性有機化合物、陽光和高溫存在下發生的一系列化學反應產生的，如下圖所示：</p> <center> <img src="/images/ozone-units/ground-ozone-how-does-it-work.png" style='max-width:100%'> </center> <p>透過每個國家定義的空氣品質指數標準來量化地面臭氧對健康的影響。有趣的是，世界上一半的國家使用基於毫克的測量標準，而其餘的國家則使用基於 ppb 的測量標準。但這真的是個問題嗎？這就是我們將在本文中討論的內容。</p> <br><center><a href='https://aqicn.org/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-09-03/air-quality-scale-in-poland/hk/' class='faqlisttitle'><span>波蘭的空氣品質等級</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 3<sup>rd</sup> 2015</small><div><small>https://aqicn.org/faq/2015-09-03/air-quality-scale-in-poland/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-09-03/air-quality-scale-in-poland/hk/"'> <style> table.fancy { border: 2px solid black; border-spacing: 0px; background: white; } table.fancy td { margin: 0px; padding: 3px; text-align: center; border-bottom: solid 1px #DEDEDE; border-right: solid 1px #DEDEDE; font-size: 13px; } table.fancy tr:hover { background: #9AC9FF; } </style> <div style='float:right;padding-left:20px;text-align:center;'> <img src="/images/aqi-scales/wios.png" width=200> <br> <small> Inspekcja Ochrony Środowiska.<br> <small>(Inspection of Environmental Protection)</small> </small> </div> <p class="bigletter"><a href='/map/poland/hk/'>波蘭</a>的空氣品質數據已經提供了一段時間，但我們最近收到了一些關於<i>Inspekcja Ochrony Środowiska</i>使用的 AQI 等級（即環境保護的區域檢查）的問題，以及它與世界空氣使用的等級有何不同品質指標項目。其中一位來自 Sylwia，她問道：</p> <blockquote> <p>我對所有這些數字感到困惑，為什麼與華沙環保局網站上顯示的數字有差異。</p> <p>請您介紹一下華沙資料的來源以及您提供的資料的可靠性嗎？</p> </blockquote> <p>這其實是一個非常好的問題，因為當涉及到數據時，沒有人應該將數據視為「理所當然」（參考<a href='https://www.math.hmc.edu/~twilliams/'>Talithia Williams</a>的精彩<a href='https://www.ted.com/talks/talithia_williams_own_your_body_s_data?language=en'>TED 演講</a>「擁有你身體的數據」）。這也是世界空氣品質指數計畫存在的原因，即解釋每個人如何理解空氣污染背後的數字。</p> <br> <br><center><a href='https://aqicn.org/faq/2015-09-03/air-quality-scale-in-poland/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-07-28/air-quality-widget-new-improved-feed/hk/' class='faqlisttitle'><span>空氣品質小部件 - 新改進的來源</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>July 28<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-07-28/air-quality-widget-new-improved-feed/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-07-28/air-quality-widget-new-improved-feed/hk/"'> <div style='float:right;padding-left:10px;border:0px solid black;'> <center> <span style='color:#9b9b9b;font-family: arial, sans-serif;font-size:88px;'>{<span style="font-size:60px;font-family: Georgia, Times, 'Times New Roman', serif;color:black;margin-bottom:10px;"> widget <span style='color:#9b9b9b'>:</span> feed </span>}</span> <br> <br> </div> <p class='bigletter'>為了改善 AQI 小部件與外部網站的集成，我們開發了新的小部件 API 來源。與現有的小部件提要相比，這個新的 API 提要為整合提供了更大的靈活性，而且還提供了更多自訂小工具外觀的選項。</p> <center> <img src='/images/widget-feed/widget-feed-banner.png' style='max-width:100%'> </center> <br> <center><a href='https://aqicn.org/faq/2015-07-28/air-quality-widget-new-improved-feed/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/hk/' class='faqlisttitle'><span>印尼即時空氣品質監測</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>July 18<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/hk/"'> <div style='float:right;padding-left:20px;text-align:center;'>  <img src="/images/indonesia-philippines/id-aq-stations-map-1.380.jpg" width=320 height=320> <br> <small> </small> </div> <p class='bigletter'>印尼現已提供即時空氣品質數據。位於印尼主要城市的 10 個監測站正在即時測量 PM <sub>10</sub>污染。</p> <p>這些監測站由印尼氣象、氣候和地球物理部<a href='http://bmkg.go.id'>BMKG</a> ( <i>Badan Meteorologi Klimatologi dan Geofisika</i> ) 營運。</p> <center><a href='https://aqicn.org/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/' class='faqlisttitle'><span>魁北克省和蒙特婁的空氣品質等級</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>July 16<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/"'> <style> table.fancy { border: 2px solid black; border-spacing: 0px; background: white; } table.fancy td { margin: 0px; padding: 3px; text-align: center; border-bottom: solid 1px #DEDEDE; border-right: solid 1px #DEDEDE; font-size: 13px; } table.fancy tr:hover { background: #9AC9FF; } </style> <div style='float:right;padding-left:20px;text-align:center;'> <img alt="Flag of Quebec.svg" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Flag_of_Quebec.svg/225px-Flag_of_Quebec.svg.png" width="225" height="150" class="thumbborder" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Flag_of_Quebec.svg/338px-Flag_of_Quebec.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Flag_of_Quebec.svg/450px-Flag_of_Quebec.svg.png 2x" data-file-width="600" data-file-height="400"> <br> <small> The <i>Fleurdelisé</i>, flag of Quebec.<br> (attribution: <a href='https://en.wikipedia.org/wiki/Flag_of_Quebec'>wikipedia</a>) </small> </div> <p class="bigletter"><a href='/city/montreal/hk/'>蒙特利爾</a>和<a href='/map/quebec/hk/'>魁北克</a>的空氣品質數據已經提供了一段時間，但我們最近收到了一些關於加拿大該地區使用的 AQI 等級的問題。其中一位來自 Marie A.，她問道：</p> <blockquote> <p>我想知道為什麼你們網站上的空氣品質指數與蒙特利爾網站上的AQI不一樣？您是否重新計算任何內容以滿足 US EPA AQI 標準？如果是這樣，怎麼辦？用什麼數據？</p> </blockquote> <p>這確實是一個非常好的問題。我們將在本文中解釋所使用的不同比例、這些比例如何相互比較以及如何進行轉換。</p> <br><br> <center><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-07-01/translation-for-polish-is-now-available/hk/' class='faqlisttitle'><span>波蘭文翻譯現已推出</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>July 1<sup>st</sup> 2015</small><div><small>https://aqicn.org/faq/2015-07-01/translation-for-polish-is-now-available/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-07-01/translation-for-polish-is-now-available/hk/"'> <div style='float:right;padding-left:10px;'> <img border=1 alt="Flag of Poland.svg" src="//upload.wikimedia.org/wikipedia/en/thumb/1/12/Flag_of_Poland.svg/240px-Flag_of_Poland.svg.png" width="240" height="150" class="thumbborder" srcset="//upload.wikimedia.org/wikipedia/en/thumb/1/12/Flag_of_Poland.svg/360px-Flag_of_Poland.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/1/12/Flag_of_Poland.svg/480px-Flag_of_Poland.svg.png 2x" data-file-width="1280" data-file-height="800"> <br> <center> <small> Flag of the Republic of Poland <br> (attribution: <a href='https://en.wikipedia.org/wiki/Flag_of_Poland'>wikipedia</a>) </small> </center> </div> <p class='bigletter'>感謝<a href='/home/hk/'>世界空氣品質指數</a>計畫社區，網站和網路應用程式現已提供<a href='https://en.wikipedia.org/wiki/Polish_language'>波蘭語</a>翻譯。非常感謝用戶「 <i>AiRs</i> 」的傑出貢獻。</p> <center><a href='https://aqicn.org/faq/2015-07-01/translation-for-polish-is-now-available/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br> <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-06-08/wind-and-air-pollution-forecast-in-quito/hk/' class='faqlisttitle'><span>基多的風和空氣污染預報</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>June 8<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-06-08/wind-and-air-pollution-forecast-in-quito/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-06-08/wind-and-air-pollution-forecast-in-quito/hk/"'> <div style='float:right;padding-left:10px;border:0px solid black;'> <center> <img src='/images/wind-in-ecuador/guagua.jpg'> <br> <small> Guagua Pichincha volcano in Ecuador (<a href='http://naturegalapagos.blogspot.com/2013/11/ecuador-volcanoes.html'>Attribution</a>) </small> </center> </div> <p class='bigletter'>北京市民早就知道，淨化空氣污染的最佳自然方式是北風大風，而南風反而可能帶來更多來自河北的污染。</p> <p>在厄瓜多<a href='http://www.quito.com.ec/en'>基多</a>，也有類似的問題，只不過污染來自<a href='http://en.wikipedia.org/wiki/List_of_volcanoes_in_Ecuador'>活火山</a>。幸運的是，它們噴發的頻率並不高，但當它們噴發時，最好避免處於爆炸性噴發形成的厚重<a href='http://en.wikipedia.org/wiki/Volcanic_ash'>火山灰雲</a>之下（見圖）。</p> <center><a href='https://aqicn.org/faq/2015-06-08/wind-and-air-pollution-forecast-in-quito/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index/hk/' class='faqlisttitle'><span>香港的空氣質量健康指數概覽</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>June 3<sup>rd</sup> 2015</small><div><small>https://aqicn.org/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index/hk/"'> <div style='float:right;padding-left:10px;'> <img src='/images/aqi-scales/AQHI-logo.png'> </div> <p class='bigletter'>香港環保署將空氣品質指數標準從傳統的<i>空氣污染指數</i>更新為所謂的<i>空氣品質<u>健康</u>指數</i>（AQHI）已經有很長一段時間了，但我們直到現在才得到更深入的了解。它，我們將在本文中進行。</p> <p>香港環保局實際上在解釋空氣品質健康指數的定義方面做得非常出色，人們可以從他們的<a href='http://www.aqhi.gov.hk/en/what-is-aqhi/faqs.html'>網站</a>上獲得了解空氣品質健康指數所需的資訊。最明顯的簡化就是將傳統的0-500指數改為新的簡化的0-10 <sup>+</sup>範圍，細分為5個健康風險類別，如下圖：</p> <center> <style type="text/css"> @media only screen and (max-width: 920px) { .aqih-scale-table { font-size: 10px; } } </style> <table class='aqih-scale-table'> <tr style='text-align:center;'> <td colspan=3>LOW <td colspan=3>MODERATE <td colspan=1>HIGH <td colspan=3>VERY HIGH <td colspan=1>SERIOUS <tr> <td colspan=3 width=20%> <div style='background-color:#4db748;width:100%;height:10px;'> <td colspan=3 width=20%> <div style='background-color:#f9a61a;width:100%;height:10px;'> <td colspan=1 width=20%> <div style='background-color:#ed1b24;width:100%;height:10px;'> <td colspan=3 width=20%> <div style='background-color:#a04623;width:100%;height:10px;'> <td colspan=1 width=20%> <div style='background-color:#000000;width:100%;height:10px;'> <tr style='text-align:center;'> <td>1 <td>2 <td>3 <td>4 <td>5 <td>6 <td>7 <td>8 <td>9 <td>10 <td>10+ </table> </center> <p>但實際上不僅僅是範圍簡化：新的 AQHI 還引入了非常巧妙的「增加健康風險」 <i>(%AR)</i>概念，該概念最初由來自南非的四位合作夥伴組成的團隊於 2007 年<a href='http://www.ehrn.co.za/publications/download/04.pdf'>定義</a>，並且首先在<a href='http://www.publichealthontario.ca/en/eRepository/Air_Quality_Indeces_Report_2013.pdf'>加拿大</a>使用。</p> <br> <center><a href='https://aqicn.org/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/hk/' class='faqlisttitle'><span>空氣質量預報在南美</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 30<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/hk/"'> <p>南美洲的空氣品質預測現已在<a href='/home/hk//'>世界空氣品質指數計畫</a>中提供，該計畫與巴西<i>氣候預測中心 ( <a href='http://www.cptec.inpe.br/home/in'>CPTEC</a> )</i>合作。可以從<a href='http://meioambiente.cptec.inpe.br'>cptec.inpe.br</a>以及<a href='/forecast/south-america/hk/'>Forecast/ South-america/</a>免費存取該預報。</p> <p> The CPTEC team has done an excellent work at providing a simple and detailed <a href='http://meioambiente.cptec.inpe.br/modelo_cattbrams.php?lang=en'>explanation</a> on the underlying concepts used by their forecast model, called <a href='http://brams.cptec.inpe.br/'>BRAMS</a> (for <i> Brazilian developments on the Regional Atmospheric Modelling System</i>). The picture below (from the CPTEC) is giving an insight on the workflow for their model (source -> transport -> deposition). </p> <br> <center> <img src='/images/forecast/catt_brams_3d_model_grid_box.jpg' style='width:500px;max-width:90%'> </center> <br> <br> <center><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/hk/' class='faqlisttitle'><span>與Instant Cast地面臭氧AQI更新</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 18<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/hk/"'> <div style='float:right;padding-left:10px;border:0px solid black;'> <center> <img src="/images/ozone-units/good-and-bad-ozone.png" width=450> <br> <small> <small><small>(Attribution: <a href='http://houstoncleanairnetwork.com/what-is-ozone'> Houston Clean Air Network</a> )</small></small> </small> </center> </div> <p class='bigletter'>地面臭氧空氣品質指數計算剛剛更新，以遵循即時投射概念，即報告現在的污染，而不是前幾個小時的污染。有關 Instant Cast 的更多信息，請參閱這篇<a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'>文章</a>。</p> <p>臭氧指數的計算現在使用每小時讀數，而不是之前的 8 小時平均值，但對於 AQI 低於 100 的情況，仍採用相同的 8 小時 AQI 斷點公式。不使用先前計算 8 小時平均濃度<a href='http://www.arb.ca.gov/regact/area06/appe.pdf'>的程式</a>更多即時報告。 AQI 高於 100，則使用正常的 1 小時臭氧斷點（而在此之前，AQI 高於 100 被定義為 1 小時和 8 小時讀數的最大值）。</p> <br> <br><center><a href='https://aqicn.org/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-05-16/world-health-organization-2014-air-pollution-ranking/hk/' class='faqlisttitle'><span>世界衛生組織：2014年空氣污染排名</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 16<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-05-16/world-health-organization-2014-air-pollution-ranking/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-05-16/world-health-organization-2014-air-pollution-ranking/hk/"'> <div style='float:right;padding-left:10px;border:0px solid black;' > <center> <img src='/air/view/faq/images/unep/who-150x150.png' title='World Health Organization'> </center> </div> <p class='bigletter'>世界衛生組織發布《2014年<a href='http://www.who.int/phe/health_topics/outdoorair/databases/cities/en/'>城市環境（室外）空氣污染</a>資料庫》已經一年多了。參與該計畫的世衛組織團隊在收集如此多國家的數據方面做得非常出色，並將其集中在一個可供所有人訪問的地方。</p> <p>我們在過去的幾篇文章中對此進行了介紹（例如<a href='/faq/2015-04-08/air-quality-in-africa-and-middle-east/hk/'>非洲</a>或<a href='/faq/2015-05-10/a-comparison-of-latin-american-air-quality-scales/hk/'>拉丁美洲</a>的空氣品質），但我們從未有機會查看不同的選項來視覺化其資料集。因此，這就是我們將在本文中討論的內容。</p> <center><a href='https://aqicn.org/faq/2015-05-16/world-health-organization-2014-air-pollution-ranking/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br> <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-05-15/india-national-air-quality-index/hk/' class='faqlisttitle'><span>印度國家空氣品質指數概覽</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 15<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-05-15/india-national-air-quality-index/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-05-15/india-national-air-quality-index/hk/"'> <div style='float:right;padding-left:10px;border:0px solid black;'> <center> <small> <div class='img-thumbnail flag flag-icon-background flag-icon-in' style='width:250px;height:150px;'></div> Flag of India<br><small>(Tiranga, तिरंगा)</small> </small> </div> <link rel='stylesheet' href='/images/flags.css/css/flag-icon.min.css' /> <p class='bigletter'>印度中央污染控制委員會最近宣佈於 2015 年 4 月發布印度國家空氣品質指數標準 ( <i>NAQI</i> )。有關該標準的所有詳細資訊均可從<a href='http://www.cpcb.nic.in/AQI_new.php'>CPCB</a> 、<a href='http://en.wikipedia.org/wiki/Air_quality_index#India'>維基百科</a>或坎普爾印度理工學院 ( <a href='http://iitk.ac.in'>iitk.ac.in</a> ) 的這份<a href='/images/aqi-scales/india-national-air-quality-standard.pdf'>報告</a>中獲得。</p> <p>這實際上是空氣品質世界意識向前邁出的非常重要的一步，因為每個國家的空氣污染都因其國家污染類型而異：例如，由於灰塵（阿拉伯半島），由於交通（新德里）或地形（智利）。</p> <center><a href='https://aqicn.org/faq/2015-05-15/india-national-air-quality-index/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-05-10/a-comparison-of-latin-american-air-quality-scales/hk/' class='faqlisttitle'><span>拉丁美洲空氣品質等級比較</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 10<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-05-10/a-comparison-of-latin-american-air-quality-scales/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-05-10/a-comparison-of-latin-american-air-quality-scales/hk/"'> <link rel='stylesheet' href='/air-static/view/images/flags.css/css/flag-icon.min.css' /> <div style='float:right;padding-left:10px;'> <img src='/air-static/view/faq/images/aqi-scales/oms-latin-america.png'> </div> <p class='bigletter'>就像世界上任何其他大陸一樣，拉丁美洲也面臨空氣污染問題。<a href='http://www.who.int/phe/health_topics/outdoorair/databases/cities/en/'>世界衛生組織</a>最近發布的 2014 年環境（室外）空氣污染報告給出了拉丁美洲幾個城市的一些年度平均數據。毫不奇怪，最糟糕的情況發生在亞洲，但拉丁美洲的一些城市也有很高的指數（見左表）。</p> <p>然而，世界衛生組織的排名應該仔細考慮，特別是考慮到報告中使用的測量方法可能存在爭議——例如，對於利馬，秘魯環保局認為世界衛生組織的數據不正確，因為樣本不是在利馬採集的。正確的地方（閱讀<a href='https://ksj.mit.edu/tracker/2014/05/who-releases-database-about-air-pollutio/'>P. Estupinya</a>的這篇文章，了解來自多個國家的完整回饋）。實際上，出於這個原因，我們只發布有關<a href='/home/hk/'>世界空氣品質項目的</a>即時信息，因為我們確實相信，除了排名之外，當前的狀況對世界公民來說也很重要。</p> <br><br> <center><a href='https://aqicn.org/faq/2015-05-10/a-comparison-of-latin-american-air-quality-scales/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/hk/' class='faqlisttitle'><span>南亞空氣品質等級：馬來西亞和泰國</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 2<sup>nd</sup> 2015</small><div><small>https://aqicn.org/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/hk/"'> <link rel='stylesheet' href='/images/flags.css/css/flag-icon.min.css' /> <div style='float:right;padding-left:10px;'> <center> <small> <div class='img-thumbnail flag flag-icon-background flag-icon-my' style='width:250px;height:150px;'></div> Flag of Malaysia<br><small>(Jalur Gemilang)</small> </small> </div> <p class='bigletter'>馬來西亞的空氣品質已經提供很長時間了，但與其他國家不同的是，只提供綜合 AQI。 PM <sub>10</sub> 、臭氧等個別污染物的 AQI 無法取得，這使得轉換為 US EPA 等級變得更加困難。</p> <p>幸運的是，有關馬來西亞使用的 AQI 等級（也稱為 API（空氣污染物指數））的資訊在《<a href='/images/aqi-scales/malaysia-api-guide.pdf'>馬來西亞空氣污染物指數指南</a>》文件中有清楚的解釋。</p> <br> <br> <center><a href='https://aqicn.org/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-04-28/real-time-air-quality-in-the-balkan-peninsula/hk/' class='faqlisttitle'><span>巴爾幹半島即時空氣品質</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>April 28<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-04-28/real-time-air-quality-in-the-balkan-peninsula/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-04-28/real-time-air-quality-in-the-balkan-peninsula/hk/"'><link rel='stylesheet' href='/images/flags.css/css/flag-icon.min.css' /> <a href='https://aqicn.org/faq/2015-04-28/real-time-air-quality-in-the-balkan-peninsula/hk/'> <div style='float:right;padding-left:10px;margin-left:10px;'> <img width="300" alt="Balkan peninsula line" src="//upload.wikimedia.org/wikipedia/commons/c/cf/Balkan_peninsula_line.jpg" /> </a> </div> <p>巴爾幹半島，俗稱巴爾幹半島，是東南歐的地理區域。該地區得名於巴爾幹山脈，從塞爾維亞東部一直延伸到保加利亞東部的黑海。</p> <p>巴爾幹地區的許多國家都提供即時空氣品質讀數。<a href='/map/turkey/hk/'>土耳其</a>（色雷斯）、<a href='/map/romania/hk/'>羅馬尼亞</a>和<a href='/map/croatia/hk/'>克羅埃西亞</a>的數據早已在世界空氣品質指數項目中提供。今天，我們能夠推出 3 個新國家的數據：<a href='/map/serbia/hk/'>塞爾維亞</a>、<a href='/map/bulgaria/hk/'>保加利亞</a>和<a href='/map/macedonia/hk/'>馬其頓</a>。</p> <br> <br> <center><a href='https://aqicn.org/faq/2015-04-28/real-time-air-quality-in-the-balkan-peninsula/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-04-26/nasa-earth-observations-and-tools-for-air-quality-applications/hk/' class='faqlisttitle'><span>NASA - 空氣品質應用的地球觀測與工具</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>April 26<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-04-26/nasa-earth-observations-and-tools-for-air-quality-applications/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-04-26/nasa-earth-observations-and-tools-for-air-quality-applications/hk/"'> <div style='float:right;padding-left:10px;margin-left:10px;max-width: 50%;width:300px;' > <a href='https://aqicn.org/faq/2015-04-26/nasa-earth-observations-and-tools-for-air-quality-applications/hk/'> <img width="250" style='max-width: 100%;' alt="The Earth seen from Apollo 17 with transparent background" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/The_Earth_seen_from_Apollo_17_with_transparent_background.png/512px-The_Earth_seen_from_Apollo_17_with_transparent_background.png"/> </a> </div> <p class='bigletter'>我們很榮幸受到 NASA 應用遙感培訓 ( <a href='http://arset.gsfc.nasa.gov/'>ARSET</a> ) 團隊的<a href='http://science.gsfc.nasa.gov/sed/index.cfm?fuseAction=people.jumpBio&iphonebookid=27549'>Pawan Gupta 博士</a>的邀請，在地球觀測和空氣品質應用工具網路研討會上介紹我們的<a href='/home/hk/'>世界空氣品質指數</a>計畫：</p> <br><center><a href='https://aqicn.org/faq/2015-04-26/nasa-earth-observations-and-tools-for-air-quality-applications/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-04-08/air-quality-in-africa-and-middle-east/hk/' class='faqlisttitle'><span>非洲和中東的空氣品質</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>April 8<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-04-08/air-quality-in-africa-and-middle-east/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-04-08/air-quality-in-africa-and-middle-east/hk/"'> <style type="text/css"> .calculatornoteref { background-color: orange; color: white; border: 1px solid #888; min-width: 12px; text-align: center; font-size: 10px; display: inline-block; border-radius: 5px; -moz-border-radius: 5px; -webkit-border-radius: 5px; -box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); } .aqisnapshot { -box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); margin: 3px; } </style> <div style='float:right;padding-left:10px;border:0px solid black;max-width: 50%;width:330px;'> <center> <img src='/air/view/faq/images/unep/african_union_flag.png' style='width: 100%;'> <br> <br> <a href='http://en.wikipedia.org/wiki/Flag_of_the_African_Union'>Flag of the African Union</a> </center> </a> </small> </div> <p>當談到空氣品質時，人們首先想到的國家是中國和印度，更普遍的是亞洲。即使在<a href='/home/hk/'>世界空氣品質指數項目</a>中，亞洲從一開始就一直是我們的重點關注對象（很可能是因為這裡是我們的總部所在地！）。</p> <p>幾年前，也就是2012年，我們決定將業務範圍擴大到其他<a href='http://www.nationsonline.org/oneworld/continents.htm'>七大洲</a>，首先是<a href='/map/australia/hk/'>大洋洲</a>，然後是<a href='/map/australia/hk/'>歐洲</a>以及<a href='/map/northamericas/hk/'>北美</a>、<a href='/map/southamericas/hk/'>南美</a>。</p> <p>但七大洲之一的<i>非洲</i>卻出奇地落後。我們收到了許多關於數據缺乏的詢問，最後一個詢問來自 Said E.，他寫道：</p> <blockquote> <p>感謝您創建世界空氣品質指數專案網站。它提供了非常有用的信息。<br>我唯一擔心的是為什麼不考慮<b>非洲</b>。<br>僅供參考，我是摩洛哥公民。<br></p> </blockquote> <br><center><a href='https://aqicn.org/faq/2015-04-08/air-quality-in-africa-and-middle-east/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-03-23/air-quality-forecasting-how-accurate-can-it-be/hk/' class='faqlisttitle'><span>空氣品質預報 - 準確度如何？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>March 23<sup>rd</sup> 2015</small><div><small>https://aqicn.org/faq/2015-03-23/air-quality-forecasting-how-accurate-can-it-be/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-03-23/air-quality-forecasting-how-accurate-can-it-be/hk/"'> <style type="text/css"> .forecastgraphin { padding: 5px; margin-bottom: 5px; border: 1px solid #aaa; background-color: #eeeeee; -box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); } .forecastgraph { font-size: 15px; display: inline-block; width: 100%; padding: 0px; text-align: left; color: #888888; margin-left: 10px; margin-right: 10px; } .graphtitle { text-shadow: 1px 1px 0 white; font-size: 18px; min-width: 300px; margin: 0px; height: 8px; color: black; border-bottom: 0px solid black; } .forecast-country { font-size: 28px; height: 40px; } .hline { stroke-width: .3; stroke: #ffffff; } .hmline { shape-rendering: crispEdges; stroke-width: 1px; stroke: #cccccc; } .vline { stroke: #cccccc; shape-rendering: crispEdges; stroke-width: 1px; xstroke-dasharray: 2, 3; } .vlinetext { font-size: 10px; } .rect { stroke: #ffffff; stroke-width: 1; } .hlinetext { background-color: yellow; font-size: 10px; } #forecastdiv {} .aqiv { border: 1px solid #888; background-color: white; border-radius: 2px; -moz-border-radius: 2px; -webkit-border-radius: 2px; -box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); } .axis path, .axis line { fill: none; stroke: #ccc; stroke-width: 1px; shape-rendering: crispEdges; } .axis text {} button { background-color: #4ebb44; border: none; font-family: "dropplets"; color: #ffffff; text-align: center; width: 70px; font-size: 20px; padding: 5px; cursor: pointer; -moz-transition-duration: 0.1s; -webkit-transition-duration: 0.1s; } button:hover { box-shadow: inset 0 0 20px rgba(54, 124, 49, 0.75); text-shadow: 0 0 10px rgba(54, 124, 49, 0.75); } </style> <div style='float:right;padding-left:10px;border:0px solid black;border-left:1px dashed #ccc;margin-left:10px;max-width: 50%;width:380px;'> <div style='color:#888;font-size:12px;line-height:1.5;text-align: center;'> <img src='/images/forecast/wind-looping.jpg' style='width:100%' title='Atmospheric Stability - STRONG LAPSE CONDITION (LOOPING)'> <br> STRONG LAPSE CONDITION (LOOPING) <br> <img src='/images/forecast/wind-coning.jpg' style='width:100%' title='Atmospheric Stability - WEAK LAPSE CONDITION (CONING)'> <br> WEAK LAPSE CONDITION (CONING) <br> <img src='/images/forecast/wind-fanning.jpg' style='width:100%' title='Atmospheric Stability - INVERSION CONDITION (FANNING)'> <br> INVERSION CONDITION (FANNING) <br> <br> Examples of Atmospheric Stability (<a href='https://courses.ecampus.oregonstate.edu/ne581/eleven/'>attribution</a>) </div> </div> <p>在天氣預報中，預測模型用於根據氣候系統從初始狀態隨時間的變化來預測大氣的未來狀態。</p> <p>雖然預測模型相當<a href='http://en.wikipedia.org/wiki/Meteorological_reanalysis'>複雜</a>（並且<i>確實</i>需要強大的科學和工程能力），但透過將實際經驗觀察結果與預測值進行比較來分析這些預測模型並驗證其<a href='http://en.wikipedia.org/wiki/Forecasting#Forecasting_accuracy'>準確性</a>的科學卻非常簡單。</p>  <p>對於空氣品質領域，就像天氣預報一樣，可以定義用於預測未來大氣污染的模型。實際上有<a href='http://pandora.meng.auth.gr/mds/strquery.php?wholedb'>很多這樣的模型</a>，通常稱為<a href='http://en.wikipedia.org/wiki/Atmospheric_dispersion_modeling'>大氣擴散模型</a>。就像天氣預報一樣，同樣的精度分析概念也可以應用在大氣污染預測。</p> <br><center><a href='https://aqicn.org/faq/2015-03-23/air-quality-forecasting-how-accurate-can-it-be/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/' class='faqlisttitle'><span>全球空氣品質等級比較 - 第 1 部分</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>March 20<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/"'> <style type="text/css"> .calculatornoteref { background-color: orange; color: white; border: 1px solid #888; min-width: 12px; text-align: center; font-size: 10px; display: inline-block; border-radius: 5px; -moz-border-radius: 5px; -webkit-border-radius: 5px; -box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); } .aqisnapshot { -box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); margin: 3px; } </style> <div style='float:right;padding-left:10px;border:0px solid black;'> <center> <a href='http://who.int' target=_who> <img src='/images/aqi-scales/who-logo.jpg' width=250 title='World Health Organization'> <br> <span style='font-size:12px;color:#888;'>World Health Organization</span><br><br></center> </a> </small> </div> <p>我們經常收到用戶詢問<a href='/home/hk/'>世界空氣品質指數項目</a>上發布的數字，並想知道與其他網站上表達的值的差異。這實際上很正常，因為這些數字，也稱為空氣品質指數 (AQI)，可能會讓初學者感到非常困惑。我們收到的最後一封訊息如下：</p> <blockquote> <p>自去年以來，我們一直在檢查中國天津的空氣品質指數，但我們發現你們網站的數據與你們網站上公佈的另一個官方網站（air.tjemc.org.cn）的數據有很大差異。我想知道哪一個可以提供更準確的數據，因為這會影響室外還是室內的決定。請幫我解決這個問題。謝謝你！</p> </blockquote> <p>我們之前已經寫過很多關於這個問題的文章，例如上海、<a href='/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/'><i>新加坡 PSI 和 PM <sub>2.5</sub> AQI</i></a><a href='/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai/hk/'><i>的 PM <sub>2.5</sub>比較數據</i></a>以及最近的臨近<a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'><i>預報</i></a>。</p> <p>但是，由於我們仍然收到很多問題，我們現在撰寫這篇文章來解釋世界各地使用的 AQI 量表的差異。</p> <br> <br> <center><a href='https://aqicn.org/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/' class='faqlisttitle'><span>空氣品質即時投射和立即投射的初學者指南。</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>March 15<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/"'> <div style='float:right;padding-left:10px;'> <img src='/images/nowcast/typhoon-asia-2004293.jpg' width=280> <br> </div> <p>早在 2015 年 3 月，我們就有機會在北京會見了來自美國國務院以及中國代表團（<i>在北京美國大使館運行 PM <sub>2.5</sub>監測器的著名實體</i>）的幾位環境專家。</p> <p>在所有討論的主題中，有一個值得一寫，即“<i><b>即時廣播</b></i>”系統。美國 EPA 使用該系統將原始污染物讀數（以 µg/m3 或<i>ppb</i>表示）轉換為 AQI（範圍從 0 到 500）。它用於<a href='http://airnow.gov'>airnow.gov</a>網站上報告的所有 AQI 值。</p> <p>臨近<i>預報</i>背後的概念是補償“ <i>24 小時平均值</i>”，在將濃度轉換為 AQI 時應使用該平均值。進行此平均的原因是， <a href='http://airnow.gov/index.cfm?action=aqibasics.aqi'>AQI 量表</a>指定每個健康問題等級（即良好、中等、...不健康...）在 24 小時暴露條件下有效<sup><a href="#nowcast-footnote-1">[1]</a></sup> 。例如，當看到188 AQI（不健康）時，需要將其解讀為「<i style='color:#888;'>如果我在外面待了24小時，而<span style='color:#cc0033;'>這24小時內</span>AQI為188，那麼對健康的影響就是不健康</i>」。這與「<i style='color:#888;'>如果現在報告的AQI是188，那麼對健康的影響就是不健康</i>」的說法有很大不同。</p> <center><a href='https://aqicn.org/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-02-23/south-asia-real-time-air-quality-monitoring-project/hk/' class='faqlisttitle'><span>南亞即時空氣品質監測項目</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 23<sup>rd</sup> 2015</small><div><small>https://aqicn.org/faq/2015-02-23/south-asia-real-time-air-quality-monitoring-project/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-02-23/south-asia-real-time-air-quality-monitoring-project/hk/"'> <div style='float:right;padding-left:10px;margin-bottom:20px;'> <img src='/images/manilla/goat-chunjie-2015.jpg'> <br> </div> <p>我們剛踏入農曆羊年（結合 2015 年的<i>木</i>元素），對於世界空氣品質指數計畫團隊來說，這意味著全速致力於將空氣品質監測擴展到東南部新國家亞洲。即：<a href='/country/philippines/hk/'><b>菲律賓</b></a>、<a href='/country/cambodia/hk/'><b>柬埔寨</b></a>和<a href='/country/indonesia/hk/'><b>印尼</b></a>（以及更多國家，例如緬甸和寮國，很快就會跟進）。</p> <p> As there is also a huge demand for PM<sub>2.5</sub> monitoring for <a href='/country/thailand/'><b>Thailand</b></a> (especially Chiang Mai and Bangkok), or for more station in <a href='/map/vietnam/'><b>Vietnam</b></a> (Ho Chi Minh City), the extension will also cover selected countries with existing network. </p> <p>但是，這一次，與之前的國家不同，我們確實需要每個人的幫助，特別是如果您居住在這些國家之一，請提供<b>您的幫助</b>。原因是，這一次，由於這些國家的環境保護機構（EPA）尚未公開實時空氣質量信息，世界空氣質量指數項目將開始眾包主要城市的空氣質量監測站上述國家<sup><a href="#notes" id="ref1">1</a></sup> .</p> <img src='/images/manilla/manilla-jakarta-skyline.jpg' width=100%><br> <i><small>Visible Air Pollution on the Manilla and Jakarta Skylines</small></i> <br><center><a href='https://aqicn.org/faq/2015-02-23/south-asia-real-time-air-quality-monitoring-project/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/' class='faqlisttitle'><span>衛星空氣品質監測：NASA WorldView 簡介</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 15<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/"'> <p>我們最近有幸與<a href='http://arset.gsfc.nasa.gov'>NASA 遙感監測計畫</a>開始合作。</p> <p>目標是使用基於 NASA 衛星的遠端空氣品質感測來確定感測器不可用的區域的空氣品質（例如海上，以及尚不可用感測器的國家/地區）。</p> <br> <br> <center><a href='https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br> <center> <a href='https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/'> <img src='/images/nasa-earthview/earthview-asia-hotspots-2015.01.14.small.jpg' width=100%> </a> <br> <br> <a href='https://aqicn.org/faq/2015-02-15/satellite-air-quality-monitoring-introduction-to-the-nasa-worldview/hk/'> <img src='/images/nasa-earthview/earthview-asia-aod-panel-2015.01.25-small.jpg' width=100%> </a> <br> </center> <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2015-02-08/visual-recognising-the-air-quality-index-a-case-applied-to-hanoi/hk/' class='faqlisttitle'><span>視覺辨識空氣品質指數－以河內為例</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 8<sup>th</sup> 2015</small><div><small>https://aqicn.org/faq/2015-02-08/visual-recognising-the-air-quality-index-a-case-applied-to-hanoi/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2015-02-08/visual-recognising-the-air-quality-index-a-case-applied-to-hanoi/hk/"'> <p>本週稍早（2015 年 2 月），我們收到了河內市民的一些詢問，想了解河內頁面（<a href='/city/vietnam/hanoi/'>城市/越南/河內</a>）上顯示的空氣品質指數。</p> <p>詢問的主要原因是世界空氣品質指數項目上顯示的空氣品質指數約為50（綠色AQI）水平，而河內的室外能見度是這樣的：</p> <center> <img src='/images/hanoi-aqi/Hanoi.10Feb.13.30-small.jpg' width=100%> </center> <br> <center><a href='https://aqicn.org/faq/2015-02-08/visual-recognising-the-air-quality-index-a-case-applied-to-hanoi/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2014-10-28/android-app-update-now-with-embedded-map-and-wind-forecast/hk/' class='faqlisttitle'><span>安卓應用程式。更新：現在附有嵌入式地圖和風力預報。</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>October 28<sup>th</sup> 2014</small><div><small>https://aqicn.org/faq/2014-10-28/android-app-update-now-with-embedded-map-and-wind-forecast/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2014-10-28/android-app-update-now-with-embedded-map-and-wind-forecast/hk/"'><style type="text/css"> img.androidthumbnail3 { width:150px; height:280px; border:1px solid #888; padding:1px; } .thumbnailcrop3 { height: 270px; overflow: hidden; display: inline-block; margin:5px; border-bottom:1px solid #888; xfont-style:italic; color:#888; } .picletsharing { -box-shadow: 1px 1px 2px rgba(0,0,0,0.5); -moz-box-shadow: 1px 1px 2px rgba(0,0,0,0.5); -webkit-box-shadow: 1px 1px 2px rgba(0,0,0,0.5); margin:3px; } </style> <p>世界空氣品質指數項目 Android 應用程式的最新版本 3.2 剛剛發布，並附帶了一些新的酷炫功能：</p> <p>嵌入式<b>地圖</b>可讓您直接從應用程式導航世界空氣監測站，<b>風</b>和溫度<b>預報</b>標籤可為您提供未來 3 天的預報。我們也一直致力於刷新視覺效果並更新設定以支援華氏溫度顯示等。</p> <center> <small> You can get the app from the <a href='https://play.google.com/store/apps/details?id=com.insdio.aqicn.airwidget.Asia' target=_googlestore>google store</a>, or directly download the <a href='/?apk'>signed apk</a> from our website, in case you do not have access the Android app store.<br> </small> </center> <br> <br> <center> <div class='thumbnailcrop3'>Station map<br>(Asia)<br><img src='/air//view/faq/images/app-3.2/small/map0.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Station map<br>(North China)<br><img src='/air//view/faq/images/app-3.2/small/map1.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Station map<br>(Beijing)<br><img src='/air//view/faq/images/app-3.2/small/map2.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Station map<br>(Seoul)<br><img src='/air//view/faq/images/app-3.2/small/map3.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Wind and Temperature<br>Forecast<br><img src='/air//view/faq/images/app-3.2/small/forecast.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Improved Settings<br><img src='/air//view/faq/images/app-3.2/small/settings.en.png' class='androidthumbnail3'></div><br><div class='thumbnailcrop3'>Pollutant graphs<br>and wind conditions<br><img src='/air//view/faq/images/app-3.2/small/graph.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Homescreen<br>Widgets<br><img src='/air//view/faq/images/app-3.2/small/home.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>Notifications<br>when AQI > 150<br><img src='/air//view/faq/images/app-3.2/small/notification.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>AQI Information for<br>the nearest stations<br><img src='/air//view/faq/images/app-3.2/small/nearest.en.png' class='androidthumbnail3'></div><div class='thumbnailcrop3'>AQI Levels<br>Explanations<br><img src='/air//view/faq/images/app-3.2/small/levels.en.png' class='androidthumbnail3'></div></center> <br> <br><center><a href='https://aqicn.org/faq/2014-10-28/android-app-update-now-with-embedded-map-and-wind-forecast/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2014-10-06/clean-air-initiative-and-the-better-air-quality-conference-2014/hk/' class='faqlisttitle'><span>清潔空氣倡議和 2014 年更好空氣品質會議</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>October 6<sup>th</sup> 2014</small><div><small>https://aqicn.org/faq/2014-10-06/clean-air-initiative-and-the-better-air-quality-conference-2014/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2014-10-06/clean-air-initiative-and-the-better-air-quality-conference-2014/hk/"'> <p>就像 2002 年以來的每一年一樣，我們來自<a href='http://cleanairasia.org/' target="_blank">亞洲清潔空氣</a>（又稱清潔空氣倡議）的同事正在組織兩年一度<a href='http://baq2014est.org/'>的更好品質會議</a>( <a href='http://baq2014est.org/' target="_blank">baq2014est.org</a> )。此次，將於2014年11月19日至21日在斯里蘭卡舉行，並將與<i>環境永續交通</i>（EST）論壇共同主辦。</p> <div style='float:right;padding-left:20px;text-align:center;margin-top:-38px;'> <img src='/images/baq-2014-logo.png' > </div> <blockquote style='color:#444'> The "Integrated Conference of BAQ 2014 and Intergovernmental 8th Regional EST Forum in Asia"  co-organized by the <a href="http://www.transport.gov.lk/web/index.php?lang=en">Ministry of Transport of Sri Lanka</a>, <a href="http://www.environmentmin.gov.lk/web/">The Ministry of Environment and Renewable Energy of Sri Lanka</a>, <a href="http://www.env.go.jp/en/" target="_blank">Ministry of the Environment of Japan</a>, <a href="http://www.uncrd.or.jp/" target="_blank">United Nations Centre for Regional Development</a>, and <a href="http://www.cleanairasia.org" target="_blank">Clean Air Asia</a>, in partnership with the <a href="http://www.adb.org/" target="_blank">Asian Development Bank</a>, <a href="http://www.giz.de/en/" target="_blank">German International Cooperation (GIZ)</a>, and <a href="http://www.worldbank.org/" target="_blank">World Bank</a>. </blockquote> <p>今年的主題是「清潔空氣和永續交通的下一代解決方案——邁向亞洲宜居社會」：</p> <blockquote style='color:#444'> <p>認識到清潔空氣和永續交通對於亞洲宜居社會至關重要，我們呼籲採取創新和<b>明智的解決方案（政策、制度、技術和融資）</b> ，以顯著減少能源、工業、交通和地區來源的空氣污染和溫室氣體，並透過加速亞洲城市和國家向環境永續交通（EST）的轉變，確保安全、公平、環境和人性化的交通系統。</p> </blockquote> <p>查看該<a href='http://www.baq2014est.org/program.html' target="_blank">程式</a>。預計將有超過 800 名參與者參加 2014 年 BAQ，我們將成為其中的一員，展示我們最近在我們的<a href='/research'>研究實驗室</a>中進行的有關<a href='/images/baq2014/aqicn-affordable_aqi_sensors-baq2014.pdf'>經濟實惠的空氣品質監測解決方案的</a>研究。</p> <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/hk/' class='faqlisttitle'><span>澳洲空氣品質：與美國 EPA AQI 等級比較。</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 6<sup>th</sup> 2014</small><div><small>https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/hk/"'> <style> table.fancy { border: 2px solid black; border-spacing: 0px; background: white; } table.fancy td { margin: 0px; padding: 3px; text-align: center; border-bottom: solid 1px #DEDEDE; border-right: solid 1px #DEDEDE; font-size: 13px; } table.fancy tr:hover { background: #9AC9FF; } </style> <div style='float:right;padding-left:20px;text-align:center;'> <img src='/air/view/experiments/images/aqi.png' width=200> </div> <p>經過漫長的等待，<a href='/city/perth/hk/'>珀斯</a>和<a href='/map/westernaustralia/hk/'>西澳大利亞</a>的空氣品質數據終於可用。</p> <p>西澳大利亞州政府環境監管部 (DER) 現在在其網站上發布數據： <a href='http://www.der.wa.gov.au/your-environment/air'>der.wa.gov.au/your-environment/air</a> 。</p> <p>雖然到<a href='http://www.dec.wa.gov.au/pollution-prevention/air-quality/air-quality-data.html'>DEC 網站的</a>連結仍然不起作用，但可以從這個新<a href='http://www.der.wa.gov.au/component/newsfeeds/newsfeed/53-air-quality/1-air-quality-data?Itemid=101'>頁面</a>存取該提要。</p> <br><br> <center><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2014-08-01/haier-air-box-can-it-provide-any-useful-air-quality-information/hk/' class='faqlisttitle'><span>海爾空氣箱：它能提供有用的空氣品質資訊嗎？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>August 1<sup>st</sup> 2014</small><div><small>https://aqicn.org/faq/2014-08-01/haier-air-box-can-it-provide-any-useful-air-quality-information/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2014-08-01/haier-air-box-can-it-provide-any-useful-air-quality-information/hk/"'><style type="text/css"> </style> <div style='float:right;padding-left:10px;'> <a href='http://item.jd.com/1159948.html' target=_jd> <img src='/images/haierairbox/airbox-green.jpg' border=0 height=300> </a> <br> </a> </div> <p>您可能偶然發現了海爾最近推出的名為「海爾空氣盒」的產品，可在<a href='http://item.jd.com/1159948.html' target=_jd>京東</a>或<a href='http://s.taobao.com/search?q=%BA%A3%B6%FB%BF%D5%C6%F8%BA%D0%D7%D3&s_from=newHeader&ssid=s5-e&search_type=item&sourceId=tb.item' target=_taobao >淘寶</a>上購買，售價為 399 元。這是一款<a href='http://www.red-dot-21.com/products/haier-air-box-air-purifier-22140' target=_ style='color:black;'>設計非常精美的</a>產品，作為其<a style='color:black;' href='http://technode.com/2014/03/19/chinese-home-appliance-makers-internet-companies-rush-to-smart-home-market/' target=_>智慧生活</a>概念的一部分，旨在與智慧空調結合使用。</p> <p>它<i>「聲稱」</i>能夠檢測和測量<a style='color:black;' href='http://en.wikipedia.org/wiki/Volatile_organic_compound' target=_>揮發性有機化合物</a>（VOC，即臭氧）以及著名的細小 PM2.5 顆粒物。但真的可以這樣做嗎？要知道答案，請查看我們最新正在進行的有關 Air Box 的實驗<a href='/experiments/haier-air-box/'>：experiments/haier-air-box</a></p> <br> <br> <center> <img src='/images/haierairbox/airbox-scale.jpg' border=0 style='max-width:100%'> </center> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2014-07-21/windows-mobile-application-now-available-from-the-microsoft-app-store/hk/' class='faqlisttitle'><span>Windows Mobile 應用程式現已可從 Microsoft App-Store 取得</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>July 21<sup>st</sup> 2014</small><div><small>https://aqicn.org/faq/2014-07-21/windows-mobile-application-now-available-from-the-microsoft-app-store/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2014-07-21/windows-mobile-application-now-available-from-the-microsoft-app-store/hk/"'><style type="text/css"> img.winmothumbnail { width:150px; height:250px; } .winmothumbnailcrop { height: 250px; overflow: hidden; display: inline-block; border:1px solid #eee; margin:5px; -box-shadow: 0 1px 3px rgba(0,0,0,0.5); -moz-box-shadow: 0 1px 3px rgba(0,0,0,0.5); -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.5); } </style> <div style='float:right;padding-left:10px;'> <img src='/images/winmo/lumia.jpg' border=0 height=350> </a> </div> The Windows Mobile 8 phone application is now available for download from the Microsoft Application Store: <a href='' target=_></a> <br> <br> <center> <a href='' target=_> <div class="winmothumbnailcrop"><img src='/images/winmo/winmo.4.jpg' class='winmothumbnail'></div> <div class="winmothumbnailcrop"><img src='/images/winmo/winmo.1.jpg' class='winmothumbnail'></div> <div class="winmothumbnailcrop"><img src='/images/winmo/winmo.3.jpg' class='winmothumbnail'></div> <div class="winmothumbnailcrop"><img src='/images/winmo/winmo.2.jpg' class='winmothumbnail'></div> <div class="winmothumbnailcrop"><img src='/images/winmo/winmo.5.jpg' class='winmothumbnail'></div> </a> </center> <br> <center><a href='https://aqicn.org/faq/2014-07-21/windows-mobile-application-now-available-from-the-microsoft-app-store/hk/' class='faq-read-more'><span>閱讀全文</span></a></center><br><br> <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2013-10-21/dylos-air-particule-conter-experiment-maintenance/hk/' class='faqlisttitle'><span>Dylos 空氣粒子計數器實驗維護。</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>October 21<sup>st</sup> 2013</small><div><small>https://aqicn.org/faq/2013-10-21/dylos-air-particule-conter-experiment-maintenance/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-10-21/dylos-air-particule-conter-experiment-maintenance/hk/"'> <br> <br> <div style='border:1px solid #ccc;background: #f8f8f8;margin:10px 0;padding: 10px;font-size: 100%;'> <a href='/products/gaia'> <img src='/air/view/products/images/gaia-a12-mounting-with-strips-01.jpg' style='float:right;width:100px;'> </a> <p>註：本文寫於 2013 年。雖然 Dylos 顯示器仍然是一個不錯的產品，但現在有更好、更實惠的監控產品，所以我們不建議再購買 Dylos 產品。</p> <center> <div style='height:1px;width: 33%;border-top:1px solid #888;margin:5px;'></div> </center> <p>例如，您可以查看 ES Labs 的<a href='/products/gaia/'>GAIA 空氣品質監測站</a>產品系列。</p> <div style='clear:both'></div> </div> <br> <br> <a href='/faq/2013-09-08/dylos-air-particule-counter-experimentation-part-1/cn/'>Dylos的实验</a>已经进行50天了。上周末北京有很强的北风，空气污染降到很低，因此我们利用这个时间作为维护Dylos计数器的好机会 <br> <br> 原因是，虽然Dylos 计数器是精心设计与制造的仪器（我们确实这样认为），但是它或许并不是专门为在北京有时会出现的严重空气污染情况下而设计的。 <br> <br> 注意到在空气严重污染的情况下，dylos 与BAM 之间的相关图表读数在浓度超过38000以上的差距越来越大后，所以我们决定检查Dylos计数器内部的工作情况. 这种饱和现象是由于内部空气不能正常流通引起的严重结果,而空气不能正常流通是由于空气管道饱和后引起的。在空气严重污染的期间，由于大量颗粒物通过空气管道形成的这种现象是完全正常的。 <br> <br> 在打开Dylos检测器后，我们确认了内部空气通道在连续积累了五十天的灰尘后，确实已经饱和了。 <br> <br> <center> <img src='/images/dusty-dylos-monitor-1.jpg' height=350 border=0 style='max-width:100%' title='北京的灰尘可以影响 Dylos空气颗粒物计数器内部工作'>   <img src='/images/dusty-dylos-monitor-2.jpg' height=350 border=0 style='max-width:100%' title='北京的灰尘可以影响 Dylos空气颗粒物计数器内部工作'> <br> - 北京的灰尘可以影响 Dylos空气颗粒物计数器内部工作 - </center> <br> <br> 照片上的灰尘就是这次清洁的结果。使用一个细小精致的刷子，就可以清理出如此数量惊人的灰尘。这是在室外做了五十天实验后的结果。照片上的灰尘就是严重污染时空气中悬浮的可被吸入的颗粒物。 <br> <br> <center> <img src='/images/beijing-dust-1.jpg' width=930 max-width=80% border=0 style='max-width:100%' title='真实的北京灰尘，北京的人们在空气严重污染时所呼吸的'> <br>- 真实的北京灰尘，北京的人们在空气严重污染时所呼吸的。 - </center> <br> <br> 我们应该知道即使是BAM这样精密昂贵的专业设备都需要技术人员进行每个月的维护。因此在我们看到Dylos清洁维护后的灰尘就不必那么吃惊了。 <br> <br> 清洁维护已经过去10天了。从箭头2指示的部分，可以看出清洁前与清洁后Dylos 的读数数据与BAM的数据已经十分接近了。尽管清洁维护确实起到了效果，但是在空气污染极其严重的情况下，这种差距还是会存在的（可以比较1与3 部分）。我们会与Dylos公司联系，咨询他们对此种情况的解释与看法。 <br> <br> <center> <a href='/sensor/beijing/sanlitun/cn/'> <img src='/images/dylos-monitor-vs-bam-monitor-correlation-impact-after-cleaning-1.jpg' width=80% max-width=930px border=0 style='max-width:100%'> </a> <br> (点击照片可以打开全部的实时数据) <br> </center> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/hk/' class='faqlisttitle'><span>修訂 PM <sub>2.5</sub> AQI 斷點</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 9<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/hk/"'> 因为一些历史原因，世界空气质量指数项目的网站上一些城市的空气质量指数换算公式没有使用2012 EPA 更新的PM2.5 标准。仅涉及到亚洲，例如日本，台湾。其他大洲（包括美洲，欧州及大洋洲）则一直使用2012 标准。 <br> <br> 与（1999年发布的）前一版相比，2012年12月14日发布的新版EPA标准的主要变化是吧PM2.5空气质量指数的每个等级的15µg/m <sup>3</sup> 降到了12µg/m<sup>3</sup>。 <br> <br> 2013年9月9日以后，所有的国家都使用更新后的PM2.5 空气质量换算数值范围，如表格所示： <br> <br><center><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2013-09-08/dylos-air-particule-counter-experimentation-part-1/hk/' class='faqlisttitle'><span>Dylos 空氣粒子計數器實驗，第 1 部分。</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>September 8<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-09-08/dylos-air-particule-counter-experimentation-part-1/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-09-08/dylos-air-particule-counter-experimentation-part-1/hk/"'> <div style='float:right;padding-left:10px;'> <img src='/air/faq/images/FPM-377.png' border=0> </div> 测量空气质量最常见的方法，只要是有关PM<sub>10</sub> 与 PM<sub>2.5</sub>微粒的检测，就会使用Beta衰减检测器（<i>Beta Attenuation Monitors</i>），又叫做BAM（请看右侧的图片）。这些都是专业仪器，也是中国，美国和其他大都数国家官方唯一用来检测空气质量的仪器。最有名的制造商是位于美国的<a href='http://www.metone.com/' target=_>Met-One</a>公司。 <br><br> BAM的工作原理非常简单：它可以测量beta粒子（电子）穿不通过一层薄薄的悬浮微粒物质（PM）后减少的数量。随着PM层厚度的增加，能穿过的beta粒子数量越低。 <br> <br> <center> <a href='http://alg.umbc.edu/umap/bam_index.html' target=_> <img src='/air/faq/images/bam.jpg' width=500 style='max-width:100%' border=0> </a> </center> <br> <br> BAM仪器的唯一的主要问题就是它的价格。它的价格预计在12万人民币左右（1万5千欧元）。在中国，目前官方监测站大约有500个BAM仪器（平均每个城市大约有10个监测站）。但是这些还不够，由于还有许多城市不能提供PM<sub>2.5</sub>读数。在泰国，有21个自动（提供每小时读数的）监测站，但是却没有一个可以提供PM<sub>2.5</sub>数据的监测站。在越南，全国只有3个监测站。 <br> <br> <center>oOo</center> <br> <br> 因此，在等待全世界各国政府过买更多最新的Beta 衰减检测器的时候，有没有别的事情可以做呢？答案是有的！事实上，有一种相对可负担得起的仪器可以用来检测空气质量中的PM<sub>10</sub> 和 PM<sub>2.5</sub>的数值。其中最有名的是<i>Dylos空气微粒计数器(Dylos Air Particule counter)</i>： <br><br> <center> <a href="http://www.amazon.com/gp/product/B00ELPP9TW/ref=as_li_ss_il?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00ELPP9TW&linkCode=as2&tag=aqicninfo-20" target=_> <img src='/air/faq/images/dylos01.jpg' height=250 border=0> <img src='/air/faq/images/dylos03.jpg' height=250 border=0> <img src='/air/faq/images/dylos_patent.jpg' height=250 border=0> </a> </center> <br> <br> <br> 如果你想了解更多有关Dylos空气微粒计数器的工作原理，请参考<a href='http://woodgears.ca/dust/dylos.html' target=_>Matthias</a> 在逆向工程方面杰出的研究，或者直接访问Dylos的网站(<a href='http://www.dylosproducts.com/dcproairqumo.html' target=_>www.dylosproducts.com/</a>). 您也可以参考resarch纸 “<a href='/air/doc/a-low-cost-instrument-for-environmental-particulate-analysis-based-on-optical-scattering.pdf'> <i>A low-cost instrument for environmental particulate analysis based on optical scattering</i></a>”来了解测量理论。 <br> <br> <div style='border:1px solid #ccc;background: #f8f8f8;margin:10px 0;padding: 10px;font-size: 100%;'> <a href='/products/gaia'> <img src='/air/view/products/images/gaia-a12-mounting-with-strips-01.jpg' style='float:right;width:100px;'> </a> Note: this article was written in 2013. While the Dylos monitor is still a good product, there is nowdays much better and affordable monitoring products, so we do not recommend purchasing the Dylos product anymore. <center> <div style='height:1px;width: 33%;border-top:1px solid #888;margin:5px;'></div> </center> You can for instance check the <a href='/products/gaia/'>GAIA air quality monitoring stations</a> product range from ES Labs. <div style='clear:both'></div> </div> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <br> <br> 为了证明dylos仪器同样可以用来作为检测空气质量的仪器，我们在我们的实验室里用Dylos DC 1100 <b>Pro, 带PC接口</b>设置了一个实验。这个专业版的仪器可以在亚马逊上买到，价格是319美元（1888人民币）。虽然相比之下Dylos DC 1100 较便宜些，但是需要注意的是必须要购买专业版的仪器（<b>Pro, 带PC接口</b>），因为它提供一个电脑接口，可以强制自动提取数据。 <br> <br> 如果你想在中国购买Dylos DC 1100 <b>Pro, 带PC接口</b>仪器，请确定你购买的正确的专业版仪器。目前，在京东上海没有找到出售专业版仪器的卖家，在淘宝上只有几个卖家。如果你真的想尽快买到我们推荐的Dylos DC 1100 <b>Pro, 带PC接口</b> 专业版仪器，但是又不想等待到货时间，可以购买价格更贵的<a href='http://item.jd.com/1015450392.html' target=_jd>Dylos DC 1700</a>，但是Dylos DC1700仅是做了一些简单的升级，并不会改变我们检测出的空气质量检测结果。 <br> <br> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <br> <br> 为了把自动提取的数据传输到服务器，还需要：<a href='http://detail.tmall.com/item.htm?id=17337394004' target=_tmall>Raspberry PI</a> （278人民币）和一个<a href='http://item.jd.com/1018803181.html' target=_jd>连接USB数据线</a>（20人民币），清单总计：2188人民币左右。 <br><br> <center> <table style='border:1px dashed black;text-align:center;'> <tr> <td> <a href="//www.amazon.com/gp/product/B014V2BFWE/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B014V2BFWE&linkCode=as2&tag=aqicninfo-20&linkId=7XJO4AOXI4ABOAEG"><img border="0" src="//ws-na.amazon-adsystem.com/widgets/q?_encoding=UTF8&ASIN=B014V2BFWE&Format=_SL110_&ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=aqicninfo-20"></a><img src="//ir-na.amazon-adsystem.com/e/ir?t=aqicninfo-20&l=as2&o=1&a=B014V2BFWE" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> </td> <td> <a target=amazon href="//www.amazon.com/gp/product/B0007OWNYA/ref=as_li_ss_il?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0007OWNYA&linkCode=as2&tag=aqicninfo-20"><img height=66% border="0" src="//ws-na.amazon-adsystem.com/widgets/q?_encoding=UTF8&ASIN=B0007OWNYA&Format=_SL160_&ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=aqicninfo-20"></a><img src="//ir-na.amazon-adsystem.com/e/ir?t=aqicninfo-20&l=as2&o=1&a=B0007OWNYA" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> </td> <td> <a target=amazon href="//www.amazon.com/gp/product/B008XVAVAW/ref=as_li_ss_il?ie=UTF8&camp=1789&creative=390957&creativeASIN=B008XVAVAW&linkCode=as2&tag=aqicninfo-20"><img height=66% border="0" src="//ws-na.amazon-adsystem.com/widgets/q?_encoding=UTF8&ASIN=B008XVAVAW&Format=_SL160_&ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=aqicninfo-20"></a><img src="//ir-na.amazon-adsystem.com/e/ir?t=aqicninfo-20&l=as2&o=1&a=B008XVAVAW" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> </td> </tr> <tr> <td> <small>Dylos DC1100 pro<br>with PC interface </td> <td> <small>Serial to USB cable </td> <td> <small>Raspberry PI </td> </tr> </table> </center> <br> <br> The documentation and scripts for connecting the Dylos particules counter to the Raspberry PI, and automatically uploading the dylos data to the World Air Quality project server are available freely from github: <a href='https://github.com/aqicn/dylos' target=_>github.com</a>. If you have any questions, you can <a href='/contact/'>contact us</a> with the subject "Dylos Experiment". <br> <br> Also, please note that when you setup your Dylos Particule Counter outside, you need to be carefull where you locate it. Ideally, it should be in a place which is not too windy, as the wind can have a significant impact on the readings (The reason is that the Dylos counter is using a simple fan to get the air inflow, and the volume of air inflow per minute needs to be constant in order to have accurate readings ~ This simple fan is one of the reason why this kind of material is so affordable compared to the professional MetOne BAM sensors). <br> <br> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <br> <br> 为了更好地比较Dylos与BAM两种仪器的读数，因为给我们提供Dylos数据的监测站在三里屯SOHO附近，因此，我们采用了朝阳区农业展览馆监测站提供的BAM数据。 <br> <br> 这里是两种数据的实时结果：蓝色的数据线是Dylos的读数（每分钟更新），红色的数据线表示的是BAM的数据（每小时更新）。第一幅曲线图比较的是PM10的读数，第二幅图比较的是PM<sub>2.5</sub>的读数。 <br> <br> <br> <center> <a href='/sensor/beijing/sanlitun/cn/' target=_> <img src='/air/view/sensor/snapshot.jpg' border=0 width=80% max-width=930px style='max-width:100%'> </a> <br> (点击照片可以打开全部的实时数据) <br> </center> <br> <br> <br> 如图所见，Dylos与BAM读数间的相似度非常高，但也并不总是对得上的。在这篇文章的第二部分（将在两个后，收集到足够的数据后发表），我们将提供更多有关读书的统计分析数据。 <br><br> 如果你有兴趣参加这个实验，建立你自己的Dylos监测站，请与我们联系。我们会为你提供所有的程序代码与设置细节，安置你的数据库传感器，这样你就可以实时观测到你自己的读数了。 <br> <br> <center>oOo</center><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/' class='faqlisttitle'><span>新加坡 PSI 和 PM <sub>2.5</sub> AQI：為什麼兩個讀數會有差異？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>June 25<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/"'> <p>最近<a href='http://www.reuters.com/article/2013/06/25/southeastasia-haze-idUSL3N0F043720130625'>來自印尼的東南亞霧霾</a>影響了新加坡和現在的<a href='http://www.bbc.co.uk/news/world-asia-23018947' target=_>馬來西亞</a>，我們有很多疑問，為什麼新加坡國家環境局網站（ <a href='http://nea.gov.sg/' target=_>nea.gov.sg</a> ）和<a href='/city/singapore/central/hk/'>新加坡世界空氣品質指數項目的數據存在差異？網頁</a>。</p> <p>例如，今天可以在 NEA 網站上看到以下內容：</p> <center> <img src='/images/nea.sg.png' width=600 style='max-width:100%'> </center> <br> <br><center><a href='https://aqicn.org/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2013-05-20/shenyang-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shenyang/hk/' class='faqlisttitle'><span>瀋陽PM <sub>2.5</sub>主要AQI更新：瀋陽3個測量站PM <sub>2.5</sub>資料對比</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>May 20<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-05-20/shenyang-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shenyang/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-05-20/shenyang-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shenyang/hk/"'> Shenyang city AQI data is now based on the maximum of the <a href='https://aqicn.org/city/shenyang/usconsulate/hk/'>沈阳美国总领事馆 (Shenyang US Consulate)</a>, <a href='https://aqicn.org/city/china/shenyang/taiyuanjie/hk/'>沈阳太原街 (Taiyuan Street, Shenyang)</a> and <a href='https://aqicn.org/city/china/shenyang/beiling/hk/'>沈阳北陵 (Beiling, Shenyang)</a>. For more infomation, please refer to the article about <a href='/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai'> Shanghai AQI. <br><br> <br><center><a href='https://aqicn.org/faq/2013-05-20/shenyang-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shenyang/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2013-02-07/air-quality-designation-update-to-the-epa-airnow-standard/hk/' class='faqlisttitle'><span>空氣品質指定：更新至 EPA AirNow 標準</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 7<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-02-07/air-quality-designation-update-to-the-epa-airnow-standard/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-02-07/air-quality-designation-update-to-the-epa-airnow-standard/hk/"'> 由于历史原因，世界空气质量指数项目的网站一直使用的是中国环保部所指定的空气质量标准。从现在开始，所有的指示将会被沿用，并采用美国环保署的 <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>AirNow</a>标准。 <br> <br> 以下表格概括了两种标准在各种语言间的不同指示。 <br> <br> <style type="text/css"> @media only screen and (max-width: 700px) { .aqih-2012-scale td:nth-child(5) { display: none;} .aqih-2012-scale td:nth-child(6) { display: none;} .aqih-2012-scale td:nth-child(7) { display: none;} .aqih-2012-scale td:nth-child(8) { display: none;} .aqih-2012-scale td { padding:0px!important; }} </style> <table class='fetching aqih-2012-scale'> <tr> <td width=10%><b>空气质量指数范围</td> <td width=10%><b>之前使用的中国环保局的指示</td> <td width=10%><b>现用的美国环保署的AirNow 指示</td> <td width=10%><b>之前的中文翻译</td> <td width=10%><b>新的中文翻译</td> <td width=10%><b>新的日文翻译</td> <td width=10%><b>新的韩语翻译</td> <td width=10%><b>新的俄语翻译</td> <td width=10%><b>颜色代码</td> </tr> <tr><td>0-50</td> <td>Excellent</td> <td>Good</td> <td>优秀</td> <td>优</td><td>優</td><td>파랑</td><td>Среднее </td> <td style='background-color:#009966;color:white;'></td> </tr> <tr><td>51-100 </td> <td>Good </td> <td>Moderate </td> <td>好</td> <td>良</td><td>良</td><td>초록</td><td>Неподходящее для особо восприимчивых </td> <td style='background-color:#ffde33'></td> </tr> <tr><td>101-150</td> <td>Lightly Polluted </td> <td>Unhealthy for Sensitive Groups </td> <td>微污染</td> <td>轻度污染</td><td>軽微汚染</td><td>노랑</td><td>Плохое </td> <td style='background-color:#ff9933;color:white;'></td> </tr> <tr><td>151-200 </td> <td>Moderately Polluted </td> <td>Unhealthy </td> <td>轻度污染</td> <td>中度污染</td><td>軽度汚染</td><td>주황</td><td>Нездоровое </td> <td style='background-color:#cc0033;color:white;'></td> </tr> <tr><td>201-300 </td> <td>Heavily Polluted </td> <td>Very Unhealthy </td> <td>中度污染，重污染</td> <td>中度污染</td><td>中度汚染</td><td>빨강</td><td>Очень нездоровое </td> <td style='background-color:#660099;color:white;'></td> </tr> <tr><td>301-500 </td> <td>Severely Polluted </td> <td>Hazardous </td> <td>污染严重的</td> <td>重度污染</td><td>重汚染</td><td>갈색</td><td>Опасное </td> <td style='background-color:#7e0023;color:white;'></td> </tr> </table> <br> <br> 请注意，这是本网站唯一更新过的指示。安卓应用的指示即将更新。 <br> <br> (翻译:Lynn) <br> <br> (<a href='https://aqicn.org/faq/2013-02-07/air-quality-designation-update-to-the-epa-airnow-standard/hk/'>Click here for the english version</a> ) <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2013-02-03/can-masks-really-filter-the-particulate-matter-as-small-as-pm25/hk/' class='faqlisttitle'><span>口罩真的能過濾小至PM <sub>2.5</sub>的粒狀物嗎？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 3<sup>rd</sup> 2013</small><div><small>https://aqicn.org/faq/2013-02-03/can-masks-really-filter-the-particulate-matter-as-small-as-pm25/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-02-03/can-masks-really-filter-the-particulate-matter-as-small-as-pm25/hk/"'> <div style='float:right;padding-left:10px;'> <a href='https://www.e-junkie.com/ecom/gb.php?cl=103349&c=ib&aff=217216' target='toto3'> <img src='/images/totobobo/icon-ttle.jpg' border=0> </a> </div> 今天我们来讨论的常问问题条目是有关我昨天发表的 <a href='/faq/2013-02-02/why-is-pm25-often-higher-than-pm10/cn'>PM10 对 PM2.5</a>的。我的朋友Klaus 就防护口罩的有效性提出了质疑。他事实上是在疑惑现代口罩是否可以在时下有效地过滤所有的小的有害的PM2.5微粒物质？ <br> <br> 实际上，这是一个非常好的问题！在北京，如果你不得不戴口罩，那么最好确保口罩真的可以过滤那些有害物质。由于我没有答案来回答他的问题，我给新加坡totobobo口罩制造公司的Francis Chu 发了一封邮件，他马上给出了回答： <blockquote> 是的，我们的口罩能够降低99.85%的0.1微米的微粒。 <br> <br> 下载实验报告可访问链接：<a href='http://totobobo.com/download/F96-NelsonLab-test.pdf' target='toto2'> totobobo.com/download/F96-NelsonLab-test.pdf</a><br> </blockquote> 对于不熟悉微粒大小的读者来说，PM10 指的是小于10微米的颗粒物质，对于PM2.5来说，它指的是小于2.5微米的颗粒物质。因此，过滤掉所有小于0.1微米的物质，意味着它可以过滤掉小于PM2.5 25倍的有害物质！所以，Klaus，不用担心，最新的技术肯定是有效的！ <br> <br> 有关颗粒大小的详细信息，可以参考维基百科网页。如想获知更多空气过滤器如何实际测验的，或者如何比较各种口罩品牌，可以查看totobobo信息丰富的 <a href='http://totobobo.com/blog/2010/01/6-filter-test/'>博客条目</a>。 <br> <br> 如想购买此Totobobo口罩： <ul> <li> 可直接访问Totobobo公司的<a href='https://www.e-junkie.com/ecom/gb.php?cl=103349&c=ib&aff=217216' target='toto3'>官网</a>。 <br> <br> <li> 可在<a href='http://s.taobao.com/search?q=totobobo' target=taobao>淘宝</a>上选择卖家。 </ul> <br> <br> (翻译:Lynn) <br> <br> (<a href='https://aqicn.org/faq/2013-02-03/can-masks-really-filter-the-particulate-matter-as-small-as-pm25/hk/'>Click here for the english version</a> ) <div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2013-02-02/why-is-pm25-often-higher-than-pm10/hk/' class='faqlisttitle'><span>為什麼PM2.5常常高於PM10？ PM10 仍然是相關措施嗎？</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>February 2<sup>nd</sup> 2013</small><div><small>https://aqicn.org/faq/2013-02-02/why-is-pm25-often-higher-than-pm10/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-02-02/why-is-pm25-often-higher-than-pm10/hk/"'> 本周我们从Severine P收到了一个很好的相关问题。他问了有关PM2.5与PM10相抵触的问题。 SP在邮件里问道：<br> <blockquote> 我不明白为什么PM2.5 的浓度经常比PM10 的高。<br> 比PM2.5小的不是包括在比PM10小的浓度里面吗？<br> 非常感谢您的回答。<br> </blockquote> SP的问题是完全正确的：PM2.5 用定义来解释，就是比2.5微米小的颗粒，所以它们确实应该被包括在比10微米小的颗粒里面。 <br> <br> 但是假设有关的浓度是不正确的：PM2.5的浓度可以比PM10的浓度小。然而，被修改过的值可以高一些。举个例子，一个PM2.5的空气质量指数为50，它与每平方米15.5微克是一致的。然而，它与PM10的每立方米55微克也是一致的。 <br> <br> 所以，即使PM2.5的每平方米15.5微克浓度全部被加进PM10的浓度里，PM10的空气质量指数依然保持比PM2.5的空气质量指数更低。例如，本周早些时候，东城东四地区的PM10的浓度为366，空气质量指数的结果为216，可是，东城东四地区的PM2.5浓度为348，空气质量指数的结果为398. <br> <br> 为了双重确定我们的理解是对的，我们联系了在世界上享有声誉的空气质量专家，来自 <a href='http://www.urbanemissions.info'>urbanemissions.info</a> 的 <a href='http://www.dri.edu/sarath-guttikunda' target=_>Dr Sarath Guttikunda</a> 博士，她回复到： <blockquote> 你说的这些是对的。差别是由于对于PM2.5和PM10的不同拐点 (<i>break points</i>)，流行病学的数据与PM2.5及PM10浓度的不同幅度是如何关联的。 (<i>how the <a href='http://zh.wikipedia.org/wiki/%E6%B5%81%E8%A1%8C%E7%97%85%E5%AD%A6'>epidemiological</a> data is correlated to each of the fractions</i>) </blockquote> <br> <br> 所以，下一个问题是关于PM10的关联（中肯），尤其是在中国，大多数时候（尤其是被确认过的）都是完全正确的，这空气质量指数中PM2.5是具有显著优势的价值，因此，我们依然需要PM10的检测吗？它还是中肯的吗？此外，当遇到从他出得到了PM10的空气质量指数比PM2.5的高的情况时呢？有关这个问题，我们再次咨询了 <a href='http://www.dri.edu/sarath-guttikunda' target=_>Sarath Guttikunda</a> 博士，他回复到： <blockquote> 现在有新的研究可以提供证据，即PM2.5比PM10更为有害。从身体角度来说，这可以说明，更小的颗粒更有可能进入肺的深处来伤害我们。这也是世界卫生组织（WHO）推动所有的国家拥有PM2.5标准的一个重要原因之一。 <br> <br> 有关问题，当我们进行PM2.5的时候，还需要有PM10浓度吗？是的，我们依然需要。在PM2.5的分数在PM10里提高的时候，对于大多数污染来自交通及燃烧城市，经常被忽视非燃烧源就是再-悬浮尘埃（来自公路尘埃和尘暴），是形成Coarser分数的一部分（从PM2.5到PM10）。如果我们突然停止检测PM10，我们就会忽视这一来源。 <br> <br> 在中国和印度的大多数城市依旧只检测PM10。因此。这也是我们不能从等式里移除的另一个原因。 </blockquote> 非常感谢Sarath Guttikunda博士既迅速又专业的解答。 <br> <br> (翻译:Lynn) <br> <br> (<a href='https://aqicn.org/faq/2013-02-02/why-is-pm25-often-higher-than-pm10/hk/'>Click here for the english version</a> ) <p>有關從濃度到 AQI 轉換的更多信息，您可以參考<a href='/calculator/hk/'>AQI 計算器</a>以及此<a href='/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/'>AQI 量表說明</a>。</p><div style='display:inline-block;width:50%;border-top:1px solid black;margin-bottom:20px;'></article><article><div><a href='https://aqicn.org/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai/hk/' class='faqlisttitle'><span>上海PM <sub>2.5</sub>主要AQI更新：上海3個測量站PM <sub>2.5</sub>資料對比</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>January 19<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai/hk/"'> 上海空气质量指数目前以 <a href='https://aqicn.org/city/shanghai/us-consulate/hk/'>上海美国总领事馆</a>、 <a href='https://aqicn.org/city/shanghai/jinganjiancezhan/hk/'>静安监测站</a>和 <a href='https://aqicn.org/city/shanghai/luwanshizhuanfuxiao/hk/'>上海师范专科学校附属小学</a>三个监测站的最大值为基础。 <br> <br> 第一个监测站主要由 <a href='http://shanghai.usembassy-china.org.cn/airmonitor.html' target=_>上海美国总领事馆</a>维护，后两个监测站的数据由 <a href='http://www.semc.gov.cn/' target=_>上海市环境监测中心</a>提供，都是政府管理的监测中心。 <br> <br> 如担心一些检测站所报道的数据比其他的网站的数值低，可参考以下的图表；这些图表显示了以上提到过的三个监测站最近5天有关的监测数据： <br> <br> <br><center><a href='https://aqicn.org/faq/2013-01-19/shanghai-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-shanghai/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2013-01-11/chengdu-pm25-main-aqi-update-comparative-pm25-data-for-2-measurement-stations-in-chengdu/hk/' class='faqlisttitle'><span>成都 PM <sub>2.5</sub>主要 AQI 更新：成都 2 個測量站 PM <sub>2.5</sub>數據對比</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>January 11<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-01-11/chengdu-pm25-main-aqi-update-comparative-pm25-data-for-2-measurement-stations-in-chengdu/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-01-11/chengdu-pm25-main-aqi-update-comparative-pm25-data-for-2-measurement-stations-in-chengdu/hk/"'> For more information, please refer to the Shanghai AQI update explanations. The following graphics show the relative PM<sub>2.5</sub> AQI data for Chengdu stations on which the overall Chengu AQI is based. <br><br> <br><center><a href='https://aqicn.org/faq/2013-01-11/chengdu-pm25-main-aqi-update-comparative-pm25-data-for-2-measurement-stations-in-chengdu/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><article><div><a href='https://aqicn.org/faq/2013-01-11/beijing-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-beijing/hk/' class='faqlisttitle'><span>北京 PM <sub>2.5</sub>主要 AQI 更新：北京 3 個測量站 PM <sub>2.5</sub>數據對比</span></a></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><small style='color:#888;'>January 11<sup>th</sup> 2013</small><div><small>https://aqicn.org/faq/2013-01-11/beijing-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-beijing/hk/</small></div><div style='height:1px;background-color:#aaaaaa;width:80px;margin-top:5px;'></div><div class='entry-content;' style='min-height:250px;cursor:pointer;' onclick='window.location="https://aqicn.org/faq/2013-01-11/beijing-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-beijing/hk/"'> For more information, please refer to the Shanghai AQI update explanations. The following graphics show the relative PM<sub>2.5</sub> AQI data for Beijing stations on which the overall Beijing AQI is based. <br><br> <br><center><a href='https://aqicn.org/faq/2013-01-11/beijing-pm25-main-aqi-update-comparative-pm25-data-for-3-measurement-stations-in-beijing/hk/' class='faq-read-more'><i18n>Read the full article</i18n></a></center><br><br></article><br><br><br></div></div></div><a name="infoaqi"></a><div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header2' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;' i18n>關於空氣質量與空氣污染指數</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header2',.88,{maxfs:45}); }; </script><div class='whitebody' style='font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;'><div class='section-outer'><div class='section-content' ><center>本網站採用的污染指數和顏色與EPA是完全相同的。 EPA的指數可以從<a href='http://zh.wikipedia.org/wiki/%E7%A9%BA%E6%B0%94%E8%B4%A8%E9%87%8F%E6%8C %87%E6%95%B0>維基百科</a>和<a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'> AirNow</a>上查到<br><br><style type="text/css">#legend-full table.infoaqitable {line-height: 1.5;background-color: white;max-width: 1000px;width: 95%;margin: 0px;border: 1px solid black;cursor: pointer;}#legend-full table.infoaqitable td {padding: 5px;font-size: 15px;text-shadow: none;}#legend-full .aqiwtxt {color: #ffffff;}#legend-full .aqibtxt {color: #000000;}@media only screen and (max-width: 800px) {#legend-full table.infoaqitable {width: 98%;}}@media only screen and (max-width: 800px) {#legend-full table.infoaqitable td {display: block;}#legend-full table.infoaqitable td:nth-child(1) {display: inline-block;font-size: 1.2em;}#legend-full table.infoaqitable td:nth-child(2) {display: inline-block;font-weight: 800;font-size: 1.2em;}}</style><div id='legend-full' onclick='window.location="/scale/"'><table class="infoaqitable"><tbody><tr><td style="text-align:center;">空气质量指数</td><td style="text-align:center;">空气质量指数级别（状况）及表示颜色</td><td>对健康影响情况</td><td>建议采取的措施</td></tr><tr style="background-color:#009966;color:white"><td nowrap="true">0 - 50</td><td style="text-align:center;">一级（优）</td><td>空气质量令人满意，基本无空气污染</td><td>各类人群可正常活动</td></tr><tr style="background-color:#ffde33"><td nowrap="true">51 -100</td><td style="text-align:center;">二级（良）</td><td>空气质量可接受，但某些污染物可能对极少数异常敏感人群健康有较弱影响</td><td>极少数异常敏感人群应减少户外活动</td></tr><tr style="background-color:#ff9933;color:white"><td nowrap="true">101-150</td><td style="text-align:center;">三级（轻度污染）</td><td>易感人群症状有轻度加剧，健康人群出现刺激症状</td><td>儿童、老年人及心脏病、呼吸系统疾病患者应减少长时间、高强度的户外锻炼</td></tr><tr style="background-color:#cc0033;color:white"><td nowrap="true">151-200</td><td style="text-align:center;color:white">四级（中度污染）</td><td>进一步加剧易感人群症状，可能对健康人群心脏、呼吸系统有影响</td><td>儿童、老年人及心脏病、呼吸系统疾病患者避免长时间、高强度的户外锻炼，一般人群适量减少户外运动</td></tr><tr style="background-color:#660099;color:white"><td nowrap="true">201-300</td><td style="text-align:center;color:white">五级（重度污染）</td><td>心脏病和肺病患者症状显著加剧，运动耐受力降低，健康人群普遍出现症状</td><td>儿童、老年人及心脏病、肺病患者应停留在室内，停止户外运动，一般人群减少户外运动</td></tr><tr style="background-color:#7e0023;color:white"><td nowrap="true">300+</td><td style="text-align:center;color:white">六级（严重污染）</td><td>健康人群运动耐受力降低，有明显强烈症状，提前出现某些疾病</td><td>儿童、老年人和病人应停留在室内，避免体力消耗，一般人群避免户外活动</td></tr></tbody></table>(参考详见<a href='http://zh.wikipedia.org/wiki/%E7%A9%BA%E6%B0%94%E8%B4%A8%E9%87%8F%E6%8C%87%E6%95%B0'>http://zh.wikipedia.org/wiki/空气质量指数</a>)<br></div><br>如果你想了解更多有關空氣質量與污染，詳見<a href='http://en.wikipedia.org/wiki/Air_quality'>維基百科</a>或者<a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi' > AirNow</a><br><br>有關健康建議詳見北京的Richard Saint Cyr MD醫生的博客：<a href='http://www.myhealthbeijing.com/'>www.myhealthbeijing.com</a><br><br></center></div></div></div><center><br><ins class="adsbygoogle" style="display:block"data-ad-client="ca-pub-0281575029452656"data-ad-slot="2455076269"data-ad-format="auto"></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});</script><style type='text/css'>.usage-notice {line-height:1.5;max-width:95%;width:1000px;margin-top:10px;padding:5px;font-size: 15px;background-color:#ffffff;text-shadow: 1px 1px 1px white;-webkit-box-shadow: 1px 1px 8px -3px rgba(0,0,0,0.3);}</style><div class="textshadowwhite usage-notice" style=''><b>注意事項</b>: 所有空氣品質數據在發佈時均未經驗證，且為了確保資料準確性，這些數據可能隨時被修改，恕不另行通知。 <a href='https://aqicn.org'>世界空氣品質指數</a>專案在編制這些訊息內容時已經謹慎的運用了所有適當的技巧，在任何情況下<a href =“https://aqicn.org“>世界空氣品質指數</a> 在任何情況下，世界空氣品質指數專案團隊或其代理人均不對因提供此數據而直接或間接引起的任何損失、傷害或損害來承擔契約、侵權或其他責任。</div><br><br><br></center><style type="text/css">@media print {#fixed-menubar,#footer-overlay {display: none}}.footer {background: #138fcc;background-attachment: fixed;background-image: url("https://aqicn.org/images-static/bluesky-banner-panoramic-dark.jpg");background-position: top center, bottom center;background-size: auto 100%;position: relative;text-align: center;font-weight: normal;margin: 0 auto;color: white;width: 100%;font-family: "Noto Serif", Cambria, "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif;}#fixed-menubar {font-family: "Noto Serif", Cambria, "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif;}#fixed-footer-marker {height: 1px;bottom: 0;position: fixed;}#footer-menu {padding-top: 5px;}#fixed-footer {box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.6);-moz-box-shadow: 0 1px -1px rgba(0, 0, 0, 0.6);-webkit-box-shadow: 0 1px -1px rgba(0, 0, 0, 0.6);}#footer-overlay {box-shadow: 0 1px 1px rgba(0, 0, 0, 0.6);-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.6);-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.6);background: #0086c8;}.floating-footer-overlay {bottom: 0px;padding: 0px;margin: 0px;z-index: 1000;position: fixed;display: none;}.footer-logo {box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);}.footerattributions {margin-top: 20px;width: 95%;max-width: 1100px;font-size: 15px;}.footercolumnout {width: 95%;max-width: 1100px;font-size: 15px;}.footercolumn {float: left;padding: 0px;margin: 0px;border: 0;text-align: left;padding: 0 10px;}.footercolumn1 {width: 37%;}.footercolumn2 {width: 38%;border-left: 1px dashed white;}.footercolumn3 {width: 15%;border-left: 1px dashed white;}.madeinbjlogo {padding-top: 20px;}@media only screen and (max-width: 920px) {.footercolumn2 {display: none;}}@media only screen and (max-width: 920px) {.footercolumn1 {width: 66%;}.footercolumn3 {width: 20%;}}@media only screen and (max-width: 800px) {.footercolumn {text-align: center;}.footercolumn1 {width: 95%;}.footercolumn3 {width: 95%;border: 0;padding: 10px;text-align: center;float: right;margin: 10px;}.madeinbjlogo {padding-top: 0;}}@media only screen and (max-width: 800px) {}.footercolumn2 li {margin-bottom: 8px;}.footer li a {background: transparent;-webkit-transition: background-color .25s;-moz-transition: background-color .25s;-0-transition: background-color .25s;transition: background-color .25s;margin-left: -8px;-webkit-border-radius: 4px;-moz-border-radius: 4px;-o-border-radius: 4px;border-radius: 4px;padding: 2px 0 2px 8px;text-decoration: none;margin-right: 8px;text-shadow: #000 1px 1px 1px;font-weight: normal !important;}.footer li a:hover {background: #62a6c8}.footer h3 {font-variant: small-caps;font-size: 150%;padding: 0px;margin: 0px;text-shadow: #2d3033 0 1px 0;font-weight: normal !important;margin-right: 8px;}.footer h3 a {font-weight: normal !important;-webkit-transition: background-color .25s;-moz-transition: background-color .25s;-0-transition: background-color .25s;transition: background-color .25s;-webkit-border-radius: 4px;-moz-border-radius: 4px;-o-border-radius: 4px;border-radius: 4px;display: block;.footer h3 a:hover {background: #62a6c8}</style><div id="fixed-footer-marker" class="locked"></div><div id="floating-footer" class="footer-overlay floating-footer-overlay footer"></div><div id="fixed-footer" class="footer"><div id="footer-overlay" class="footer-overlay"></div><br><br><center><div id='fixed-footer-menu-buttons-with-text' style='max-width:80%;margin-bottom:20px;display:none;'><a href='javascript:go2home();' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-home'></div>首頁</div></a> <a href='/here/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-geofencing'></div>這裡</div></a> <a href='/map/world/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-globe'></div>地圖</div></a> <a href='/mask/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-dustmask'></div>口罩！</div></a> <a href='/faq/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-faq'></div>常見問題</div></a> <a href='/city/all/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-search'></div>搜索</div></a> <a href='/contact/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-talk'></div>聯繫</div></a> <a href='/links/hk/' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-link'></div>鏈接</div></a> </div><div class='footercolumnout'><div class='footercolumn1 footercolumn'><h3 i18n='generic'>About This Project</h3><br><li><a href='/contact/hk/' i18n='generic'>聯繫世界空氣品質指數團隊</a></li><li><a href='/media/hk/' i18n='generic'>新聞和媒體工具包</a></li><br><h3><a href='/research/hk/' i18n='generic'>空氣品質研究</a></h3><br><li><a href='/faq/hk/' i18n='generic'>空氣質量的知識庫和文章</a></li><li><a href='/research/hk/' i18n='generic'>Air Quality Experimentation</a></li><li><a href='/sensor/hk/' i18n='generic'>空氣品質傳感器分析</a></li><br><h3><a href='/faq/hk/' i18n='generic'>常問問題</a></h3><br><li><a href='/sources/hk/' i18n='generic'>空氣品質數據來源</a></li><li><a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/' i18n='generic'>空氣品質指數的計算</a></li><li><a href='/forecast/hk/' i18n='generic'>空氣品質預報</a></li><li><a href='/products/hk/' i18n='generic'>空氣質量的產品（口罩，監示器......）</a></li><li><a href='/api/hk/' i18n='generic'>API (Application Programming Interface)</a></li><li><a href='/data-platform/hk/' i18n='generic'>Historical Data Platform</a></li></div><div class='footercolumn2 footercolumn'><h3>Credits</h3><br><li><a href='/sources/hk/' i18n='generic'>All the EPA in the world for their excellent work in maintaining, measuring and providing Air Quality information to the world citizens</a></li><li><a href='http://www.maxmind.com' target=_ i18n='generic'>This product includes GeoLite2 data created by MaxMind, available from maxmind.com.</a><li><a href='http://geonames.org' target=_ i18n='generic'>This product includes GeoNames city information, available from geonames.org.</a><li><a href="http://openweathermap.org/" target="__s" i18n='generic'>Open Weather Map, combined with qweather™ improvement algorithm</a><li><a href='http://wxqa.com' target="__s" i18n='generic'>Citizen Weather Observer Program</a> via <a href='https://cwop.waqi.info' target="__s">cwop.waqi.info</a><li><a href="http://atmosphere.copernicus.eu/" target="__s" i18n='generic'>Contains modified Copernicus Atmosphere Monitoring Service Information</a><li><a href="https://www.flaticon.com/" target="__s" title="Flaticon" i18n='generic'>Some of the icons made by Freepik from www.flaticon.com</a><li><a href="https://locationiq.com/" target="__s" title="location IQ" i18n='generic'>Reverse geocoding by locationiq.com</a><li><a href="https://www.openstreetmap.org/copyright" target="__s" title="Open Street Map" i18n='generic'>Base map and data from OpenStreetMap.</a></div><div class='footercolumn3 footercolumn'><center>© 2008-2024<br><a href='https://waqi.info'><i18n:generic>The World Air Quality Index Project</i18n></a><br><br><img src='https://waqi.info/icons/logo.png?_=1732579342' class='footer-logo' alt='the World Air Quality Index project logo' border=0 height=100>  <img class='async-img' data-src='https://aqicn.org/images/MadeInBJ.png?_=1732579342' class='madeinbjlogo' alt='made in 北京' border=0><br><br></center></div></div></center><div style='clear:both'></div><div style='clear:both;'></div><center><div id='xatzcaqd'></center><br><div id='mailing-list-footer'><style type="text/css">#mailing-list-footer .mailing-list-subscription {text-shadow: #000 1px 1px 1px;font-size: 15px;color: white;}</style><script>var i18nTexts=(i18nTexts||[]);i18nTexts.push({"wa.KqlOlZrllRNJ+7u88XlbL2RQFwo=":"\u54ce\u5440\uff01\u51fa\u4e8b\u4e86\u3002\u8acb\u7a0d\u5f8c\u518d\u8a66\u3002","wa.ds6QyCdIOHG4hhIEHD2rFqI\/WwI=":"\u8a3b\u518a\u6211\u5011\u7684\u514d\u8cbb\u6bcf\u6708\u90f5\u4ef6\u5217\u8868\uff0c\u4e26\u5728\u6709\u65b0\u6587\u7ae0\u6642\u6536\u5230\u901a\u77e5\u3002","wa.Xi+TKw0nK3I5533XVrPPC2U4EGA=":"\u4f60\u7684\u90f5\u4ef6","wa.P6QFTyFPD4Bj2PtEU75l1GDj4ww=":"\u63d0\u4ea4","wa.FoXcvD6sGbwj\/zOhqhL39XuXQsA=":"\u6b63\u5728\u8a3b\u518a\u60a8\u7684\u96fb\u5b50\u90f5\u4ef6\uff0c\u8acb\u7a0d\u5019"})</script><script src='/webapp/dist/mailing-dyn.740fe2cfc24722505254.js?_=1706407958' type='text/javascript'></script></div><center style='clear:both;'><br><small>This page has been generated on Tuesday, Nov 26th 2024, 08:02 am CST from jp2n</small><br><small><span id='gentime'></span></small><br><br></center><br><br></div><script type="text/javascript">var CFooter = function() {var hasSlider = false;try {var p = window.location.pathname.split("/")[1];hasSlider = ["station", "gaia", "here", "map"].indexOf(p) >= 0;} catch (e) {};var menubar = document.getElementById("fixed-menubar");var _isFloating = true;var slideDY = 35;this.isFloating = function() {if (isMobileUA) return true;return _isFloating;};function checkPosition() {var clientHeight = document.body.clientHeight;var floatingFooterTop = 0;var ff_el = document.getElementById("floating-footer");var ff_el_height = ff_el ? ff_el.clientHeight : 0;do {floatingFooterTop += ff_el.offsetTop ? el.offsetTop : 0;} while (ff_el = ff_el.offsetParent);var fixedFooterTop = 0;var fo_el = document.getElementById("footer-overlay");do {fixedFooterTop += fo_el.offsetTop ? fo_el.offsetTop : 0;} while (fo_el = fo_el.offsetParent);var scrollTop = 0;var b_el = document.body;do {scrollTop += b_el.scrollTop ? b_el.scrollTop : 0;} while (b_el = b_el.parentNode);var screenHeight = 0;var ffm_el = document.getElementById("fixed-footer-marker");do {screenHeight += ffm_el.offsetTop ? ffm_el.offsetTop : 0;} while (ffm_el = ffm_el.offsetParent);if (hasSlider && scrollTop < slideDY) {menubar.style.bottom = -(slideDY - scrollTop) + "px";menubar.style.display = "";_isFloating = true;} else if (screenHeight + scrollTop - ff_el_height >= fixedFooterTop + 40) {menubar.style.display = "none";_isFloating = false;} else {menubar.style.bottom = "0px";menubar.style.display = "";_isFloating = true;}};function init() {var footerOverlay = document.getElementById("footer-overlay");footerOverlay.innerHTML = menubar.innerHTML;footerOverlay.style.display = "";if (!hasSlider) {checkPosition();return;}var st = Date.now();var sdt = 500;var mdt = 500;var timer = setInterval(function() {var dt = Date.now() - st;if (dt < sdt) return;dt -= sdt;dt = dt * dt / mdt;var dy = Math.min(dt, mdt) * slideDY / mdt;menubar.style.bottom = -dy + "px";if (dt > mdt + sdt) {clearInterval(timer);checkPosition();}}, 25);}window.onscroll = function() {checkPosition();};init();return this;};var footer = new CFooter();function initFooter() {};</script><style>.onoffswitch {position: relative; width: 70px;-webkit-user-select:none; -moz-user-select:none; -ms-user-select: none;}.onoffswitch-checkbox {display: none;}.onoffswitch-label {display: block; overflow: hidden; cursor: pointer;border: 2px solid #004E74; border-radius: 20px;}.onoffswitch-inner {display: block; width: 200%; margin-left: -100%;transition: margin 0.3s ease-in 0s;}.onoffswitch-inner:before, .onoffswitch-inner:after {display: block; float: left; width: 50%; height: 30px; padding: 0; line-height: 30px;font-size: 14px; color: white; font-family: Trebuchet, Arial, sans-serif; font-weight: bold;box-sizing: border-box;}.onoffswitch-inner:before {content: "°C";padding-left: 10px;background-color: #04ADFF; color: #FFFFFF;}.onoffswitch-inner:after {content: "°F";padding-right: 10px;background-color: #04ADFF; color: #FFFFFF;text-align: right;}.onoffswitch-switch {display: block; width: 28px; margin: 1px;background: #FFFFFF;position: absolute; top: 0; bottom: 0;right: 36px;border: 2px solid #004E74; border-radius: 20px;transition: all 0.3s ease-in 0s; }.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-inner {margin-left: 0;}.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-switch {right: 0px; }</style><style>#settingsdiv-copy {margin:20px;}#settingsdiv-outer {padding-bottom:10px;position:fixed;z-index: 100003;}#settingsdiv {xdisplay: none;xwidth:200px;xheight:120px;overflow-y: scroll;max-height: 300px;font-size:15px; padding:2px 10px;background-color:#0086c8;-webkit-box-shadow: 1px 1px 2px 0 rgba(0,0,0,0.5);border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;border:3px solid #fff;color:#fff;}#settingsdiv h2 { font-size:20px; }#settings-lang {padding: 5px;}#settings-lang a:hover {text-decoration: none;}#settings-lang .item:hover {background-color: #eee;color: black;}#settings-lang .item:hover .name {color: black;}#settings-lang .item {max-width: 450px;padding: 2px;}#settings-lang .name span {font-size: 16px;}#settings-lang .name {font-size:18px;color: white;font-variant: small-caps;}#settings-lang .flag {vertical-align: text-bottom;display:inline-block;}#settings-lang select {font-size: 18px;}</style><div id='settingsdiv-outer'><div id='settingsdiv' ><div onclick='settingsMenu.close()' style='cursor:pointer;border-bottom:1px solid #ccccf8;padding-top:12px;'><svg height="24px" viewBox="0 0 512 512" width="24px" style='float:right;fill:white;'><path d="M74.966,437.013c-99.97-99.97-99.97-262.065,0-362.037c100.002-99.97,262.066-99.97,362.067,0 c99.971,99.971,99.971,262.067,0,362.037C337.032,536.998,174.968,536.998,74.966,437.013z M391.782,120.227 c-75.001-74.985-196.564-74.985-271.534,0c-75.001,74.985-75.001,196.55,0,271.535c74.97,74.986,196.533,74.986,271.534,0 C466.754,316.775,466.754,195.212,391.782,120.227z M188.124,369.137l-45.251-45.266l67.876-67.877l-67.876-67.876l45.251-45.267 L256,210.743l67.877-67.892l45.25,45.267l-67.876,67.876l67.876,67.877l-45.25,45.266L256,301.245L188.124,369.137z"/></svg><h2>設定</h2></div><br><center><div id='settings-lang'>選擇語言： <br><div class='sprite-isprt-web-gb flag'></div><div class='sprite-isprt-web-cn flag'></div><div class='sprite-isprt-web-jp flag'></div><div class='sprite-isprt-web-kr flag'></div><div class='sprite-isprt-web-pl flag'></div><br><select onchange='location.href = this.value'><option value='https://aqicn.org/faq/' >English - 英語</option><option value='https://aqicn.org/faq/cn/' >简体中文 - 簡體中文</option><option value='https://aqicn.org/faq/jp/' >日本</option><option value='https://aqicn.org/faq/es/' >español - 西班牙人</option><option value='https://aqicn.org/faq/kr/' >한국의 - 韓國</option><option value='https://aqicn.org/faq/ru/' >русский - 俄</option><option value='https://aqicn.org/faq/hk/' selected>繁體中文</option><option value='https://aqicn.org/faq/fr/' >Francais - 法國人</option><option value='https://aqicn.org/faq/pl/' >Polski - Polish</option><option value='https://aqicn.org/faq/de/' >Deutsch - German</option><option value='https://aqicn.org/faq/pt/' >Português - Portuguese</option><option value='https://aqicn.org/faq/vn/' >Tiếng Việt - Vietnamese</option><option value='https://aqicn.org/faq/it/' >Italiano - Italian</option><option value='https://aqicn.org/faq/id/' >bahasa Indonesia - Indonesian</option><option value='https://aqicn.org/faq/nl/' >Nederlands - Dutch</option><option value='https://aqicn.org/faq/fa/' >فارسی - Persian</option><option value='https://aqicn.org/faq/th/' >ภาษาไทย - Thai</option><option value='https://aqicn.org/faq/hu/' >Magyar - Hungarian</option><option value='https://aqicn.org/faq/el/' >Ελληνικά - Greek</option><option value='https://aqicn.org/faq/ro/' >Română - Romanian</option><option value='https://aqicn.org/faq/bg/' >български - Bulgarian</option><option value='https://aqicn.org/faq/ur/' >اردو - Urdu</option><option value='https://aqicn.org/faq/hi/' >हिंदी - Hindi</option><option value='https://aqicn.org/faq/ar/' >العربية - Arabic</option><option value='https://aqicn.org/faq/sr/' >Српски - Serbian</option><option value='https://aqicn.org/faq/bn/' >বাংলা - Bangla</option><option value='https://aqicn.org/faq/bs/' >босански - Bosnian</option><option value='https://aqicn.org/faq/hr/' >hrvatski - Croatian</option><option value='https://aqicn.org/faq/tr/' >Türkçe - Turkish</option><option value='https://aqicn.org/faq/uk/' >українська - Ukrainian</option><option value='https://aqicn.org/faq/cs/' >čeština - Czech</option><option value='https://aqicn.org/faq/be/' >беларускі - Belarusian</option></select></div><br><table><tr><td><center><i>Temperature unit:</i><br><span style='font-size:18px'><span style='display:;' id='settings-temp-label-on'>Celcius</span><span style='display:none;' id='settings-temp-label-off'>Fahrenheit</span></span></center></td><td><div class="onoffswitch" onclick='settingsMenu.click("temp")'><input type="checkbox" name="onoffswitch" class="onoffswitch-checkbox" id="settings-temp" checked ><label class="onoffswitch-label" for="myonoffswitch"><span class="onoffswitch-inner"></span><span class="onoffswitch-switch"></span></label></div></table></center><br></div><div style='display:none;height:0px;' id='settingsdiv-arrow'><div style='width: 0; height: 0; border: 7px solid transparent;top:0px;border-top: 7px solid #fff;position:relative;;margin-left:100px;'></div></div></div><script>function CSettingsMenu(){var self=this;var isInit = false;var timeout = null;var isPopup = false;this.show = function(){log("show!");if (isPopup) {this.close();return;}isPopup = true;$("#settingsdiv-arrow").hide();$("#settingsdiv").show();var pos = $("#footer-settings-img").offset();$("#settingsdiv-outer").css({left: "0px",width: "100%",bottom: "30px"});$("#settingsdiv").css({width: "100%",textAlign: "center",boxSizing: "border-box"});};this.close = function() {log("close!");$("#settingsdiv").hide();isPopup = false;};this.onmouseover = function(){if (isPopup) return;if (!footer || !footer.isFloating()) return;if (getWindowWidth()<800) return;if (!isInit) {$('#settingsdiv-outer').show().mouseleave(function(){ self.onmouseout(); }).mouseenter(function(){ self.onmouseover(); });display("temp");isInit = true;}if (timeout) clearTimeout(timeout);timeout = null;var pos = $("#footer-settings-img").offset();var px = (pos.left+6-100);$("#settingsdiv-outer").css({left: px + "px",bottom: (30) + "px"});$("#settingsdiv").show();$("#settingsdiv-arrow").delay(150).show();var tb = document.getElementById("settingsdiv").getBoundingClientRect(), w =getWindowWidth();var ml = Math.min((w-tb.right-2),0);$("#settingsdiv-outer").css({left:(px+ml)+"px"});};this.onmouseout = function(){if (isPopup) return;isShown = false;if (timeout) clearTimeout(timeout);timeout = setTimeout(function(){$("#settingsdiv").slideUp(200);$("#settingsdiv-arrow").hide();},150);};this.click = function(item){var status = store.get('aqicn-settings-'+item);store.set('aqicn-settings-'+item,status==1?2:1);display(item);if (item=="temp") convertTemperature();};this.val = function(item) {var status = store.get('aqicn-settings-'+item);return status!=1;};var display = function(item) {var status = store.get('aqicn-settings-'+item);if (status==1){$("#settings-"+item+"-label-off").show();$("#settings-"+item+"-label-on").hide();}else{$("#settings-"+item+"-label-on").show();$("#settings-"+item+"-label-off").hide();}var o = document.getElementById("settings-"+item);if (o) o.checked = status!=1;};document.getElementById('settingsdiv-outer').addEventListener('touchmove', function(e) {e.preventDefault();}, false);return this;}var settingsMenu = new CSettingsMenu();</script><script type="text/javascript"> fitLine(".link",.9); </script><script src='https://aqicn.org/air-cache/jquery-3.4.1.min.js?_=20191127.152416' type='text/javascript'></script><script type="text/javascript">function initTime(){if (isMobileUA) return;function setTimeText(){var monthNames = [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ]; var dayNames= ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];var newDate = new Date();newDate.setDate(newDate.getDate());var od = document.getElementById("ClockTime");if (od) od.innerHTML = dayNames[newDate.getDay()] + " " + monthNames[newDate.getMonth()] + ' ' + newDate.getDate() + ', ' + newDate.getFullYear();var minutes = new Date().getMinutes();var hours = new Date().getHours();var time = ( hours < 10 ? "0" : "" ) + hours;time += ":"+( minutes < 10 ? "0" : "" ) + minutes;var ot = document.getElementById("ClockTime");if (ot) ot.innerHTML = time;}setInterval( function() { setTimeText() }, 1000*60*15 );setTimeText();};aqi18n.register('aqi-implication-0-50',"\u7a7a\u6c23\u8cea\u91cf\u88ab\u8a8d\u70ba\u662f\u4ee4\u4eba\u6eff\u610f\u7684\uff0c\u7a7a\u6c23\u6c61\u67d3\u5e7e\u4e4e\u6c92\u6709\u98a8\u96aa");aqi18n.register('aqi-level-0-50',"\u597d");aqi18n.register('aqi-implication-50-100',"\u7a7a\u6c23\u8cea\u6578\u53ef\u4ee5\u63a5\u53d7; \u4f46\u67d0\u4e9b\u6c61\u67d3\u7269\uff0c\u5c0d\u6975\u5c11\u6578\u7a7a\u6c23\u6c61\u67d3\u7570\u5e38\u654f\u611f\u7684\u4eba\u4f86\u8aaa\uff0c\u53ef\u80fd\u5b58\u5728\u9069\u5ea6\u7684\u5065\u5eb7\u554f\u984c\u3002");aqi18n.register('aqi-level-50-100',"\u4e2d\u7b49");aqi18n.register('aqi-implication-100-150',"\u904e\u654f\u65cf\u7fa4\u53ef\u80fd\u6703\u53d7\u5230\u5065\u5eb7\u5f71\u97ff\u3002 \u5927\u90e8\u5206\u7fa4\u773e\u4e0d\u592a\u6703\u53d7\u5230\u5f71\u97ff\u3002");aqi18n.register('aqi-level-100-150',"\u5c0d\u65bc\u654f\u611f\u7684\u7fa4\u9ad4\u662f\u4e0d\u5065\u5eb7\u7684");aqi18n.register('aqi-level-100-150-html',"<div style='font-size:66%'>\u5c0d\u65bc\u654f\u611f\u7684\u7fa4\u9ad4\u662f\u4e0d\u5065\u5eb7\u7684<\/div>");aqi18n.register('aqi-implication-150-200',"\u6bcf\u500b\u4eba\u90fd\u53ef\u80fd\u958b\u59cb\u611f\u89ba\u5065\u5eb7\u53d7\u5230\u5f71\u97ff\uff1b\u654f\u611f\u9ad4\u8cea\u7684\u65cf\u7fa4\u5247\u53ef\u80fd\u6703\u53d7\u5230\u66f4\u56b4\u91cd\u7684\u5065\u5eb7\u5f71\u97ff");aqi18n.register('aqi-level-150-200',"\u4e0d\u5065\u5eb7");aqi18n.register('aqi-implication-200-300',"\u7dca\u6025\u60c5\u6cc1\u7684\u5065\u5eb7\u8b66\u544a\u3002 \u5168\u90e8\u4eba\u7fa4\u90fd\u5bb9\u6613\u53d7\u5230\u5f71\u97ff\u3002");aqi18n.register('aqi-level-200-300',"\u975e\u5e38\u4e0d\u5065\u5eb7");aqi18n.register('aqi-level-200-300-html',"<div style='font-size:80%'>\u975e\u5e38\u4e0d\u5065\u5eb7<\/div>");aqi18n.register('aqi-implication-300-500',"\u5065\u5eb7\u8b66\u5831\uff1a\u6bcf\u500b\u4eba\u90fd\u53ef\u80fd\u6703\u53d7\u5230\u66f4\u56b4\u91cd\u7684\u5065\u5eb7\u5f71\u97ff");aqi18n.register('aqi-level-300-500',"\u5371\u96aa");aqi18n.register('updated',"\u66f4\u65b0");</script><script type="text/javascript">["initFooter","preInitPage","initTime"].forEach(function(f){if (window[f]) { try { window[f](); } catch (e) { loge("error in "+f,e); }} });</script><script src='/jscripts/moment/bundle.min.js?_=20200103.150752&type=script'></script><script src='https://aqicn.org/air-cache/tingle/0.15.1/tingle.min.js?_=20191109.130307' type='text/javascript'></script><script type="text/javascript">document.addEventListener("DOMContentLoaded", function() { ["Page","HeadSearch","Search","Notify","Geolocate","AqiForecast","Download","Sharing","Page2"].forEach(function(f){f = "init"+f;if (window[f]) { try { window[f](); } catch (e) { loge ("error in "+f,e,e.stack);}; }});if (typeof ntfOnInit != "undefined") ntfOnInit();});</script><style type="text/css">.uv-icon.uv-top-right { position:absolute!important;top:38px!important;z-index: 1!important; }.uv-icon.uv-bottom-right { bottom:42px!important;}._hj-f5b2a1eb-9b07_widget { z-index: 0!important; }#uvTab { z-index: 100!important; }.uv-icon { z-index: 100; }</style><script type="text/javascript">(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');ga('create', 'UA-28507883-1', 'auto');ga('send', 'pageview');try {var images = document.querySelectorAll('.async-img');var config = { rootMargin: '50px 0px', threshold: 0.01};function preloadImage(img) {img.src = img.dataset.src; }function onIntersection(entries) {entries.forEach(function(entry) {if (entry.intersectionRatio > 0) {observer.unobserve(entry.target);preloadImage(entry.target);}})}var observer = new IntersectionObserver(onIntersection, config);images.forEach(function(image){observer.observe(image)});} catch (e) {} </script></body></html>