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>魁北克省和蒙特婁的空氣品質等級</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/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/' rel=canonical/><link rel='alternate' hreflang='x-default' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/'/><link rel='alternate' hreflang='zh-CN' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//cn'/><link rel='alternate' hreflang='ja' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//jp'/><link rel='alternate' hreflang='es' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//es'/><link rel='alternate' hreflang='ko' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//kr'/><link rel='alternate' hreflang='ru' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ru'/><link rel='alternate' hreflang='zh-TW' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hk'/><link rel='alternate' hreflang='fr' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//fr'/><link rel='alternate' hreflang='pl' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//pl'/><link rel='alternate' hreflang='de' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//de'/><link rel='alternate' hreflang='pt' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//pt'/><link rel='alternate' hreflang='vi' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//vn'/><link rel='alternate' hreflang='it' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//it'/><link rel='alternate' hreflang='id' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//id'/><link rel='alternate' hreflang='nl' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//nl'/><link rel='alternate' hreflang='fa' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//fa'/><link rel='alternate' hreflang='th' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//th'/><link rel='alternate' hreflang='hu' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hu'/><link rel='alternate' hreflang='el' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//el'/><link rel='alternate' hreflang='ro' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ro'/><link rel='alternate' hreflang='bg' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bg'/><link rel='alternate' hreflang='ur' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ur'/><link rel='alternate' hreflang='hi' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hi'/><link rel='alternate' hreflang='ar' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ar'/><link rel='alternate' hreflang='sr' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//sr'/><link rel='alternate' hreflang='bn' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bn'/><link rel='alternate' hreflang='hu' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hu'/><link rel='alternate' hreflang='bs' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bs'/><link rel='alternate' hreflang='hr' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hr'/><link rel='alternate' hreflang='tr' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//tr'/><link rel='alternate' hreflang='uk' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//uk'/><link rel='alternate' hreflang='cs' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//cs'/><link rel='alternate' hreflang='be' href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//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="魁北克省和蒙特婁的空氣品質等級" /><meta property="twitter:title" content="魁北克省和蒙特婁的空氣品質等級" /><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%3AnN2xgETNQT%7BKXYnuk%5BFV0MSV%5BGmZSJB%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/2015-07-16/air-quality-scale-in-quebec-and-montreal/'><div title='英語' class='sprite-isprt-web-gb flag-en'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//cn'><div title='簡體中文' class='sprite-isprt-web-cn flag-zh-CN'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//jp'><div title='日本' class='sprite-isprt-web-jp flag-ja'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//es'><div title='西班牙人' class='sprite-isprt-web-es flag-es'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//kr'><div title='韓國' class='sprite-isprt-web-kr flag-ko'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ru'><div title='俄' class='sprite-isprt-web-ru flag-ru'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hk'><div title='繁體中文' class='sprite-isprt-web-hk flag-zh-TW'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//fr'><div title='法國人' class='sprite-isprt-web-fr flag-fr'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//pl'><div title='Polish' class='sprite-isprt-web-pl flag-pl'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//de'><div title='German' class='sprite-isprt-web-de flag-de'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//pt'><div title='Portuguese' class='sprite-isprt-web-br flag-pt'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//vn'><div title='Vietnamese' class='sprite-isprt-web-vn flag-vi'></div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//it'><div title='Italian' class='sprite-isprt-web-it flag-it'>🇮🇹</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//id'><div title='Indonesian' class='sprite-isprt-web-id flag-id'>🇮🇩</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//nl'><div title='Dutch' class='sprite-isprt-web-nl flag-nl'>🇳🇱</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//fa'><div title='Persian' class='sprite-isprt-web-ir flag-fa'>🇮🇷</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//th'><div title='Thai' class='sprite-isprt-web-th flag-th'>🇹🇭</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hu'><div title='Hungarian' class='sprite-isprt-web-hu flag-hu'>🇭🇺</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//el'><div title='Greek' class='sprite-isprt-web-gr flag-el'>🇬🇷</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ro'><div title='Romanian' class='sprite-isprt-web-ro flag-ro'>🇷🇴</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bg'><div title='Bulgarian' class='sprite-isprt-web-bg flag-bg'>🇧🇬</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ur'><div title='Urdu' class='sprite-isprt-web-pk flag-ur'>🇵🇰</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hi'><div title='Hindi' class='sprite-isprt-web-in flag-hi'>🇮🇳</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ar'><div title='Arabic' class='sprite-isprt-web-ae flag-ar'>🇦🇪</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//sr'><div title='Serbian' class='sprite-isprt-web-rs flag-sr'>🇷🇸</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bn'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bs'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hr'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//tr'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//uk'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//cs'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal/' 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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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/2015-07-16/air-quality-scale-in-quebec-and-montreal//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;;;'>魁北克省和蒙特婁的空氣品質等級</div><div id='h1header2' class='h1sub' >Air Quality Scale in Quebec and Montreal</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header1',.88,{maxfs:45});fitLine('#h1header2',.88,{maxfs:38}); }; </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' ><i>Posted on July 16<sup>th</sup> 2015</i><div style='height:1px;background-color:#aaaaaa;width:300px;margin-top:5px;'></div><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=https%3A%2F%2Faqicn.org%2Ffaq%2F2015-07-16%2Fair-quality-scale-in-quebec-and-montreal%2Fhk%2F&redirect_uri=https%3A%2F%2Faqicn.org%2Ffaq%2F2015-07-16%2Fair-quality-scale-in-quebec-and-montreal%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>Air Quality Scale in Quebec and Montreal<br>(https:\/\/aqicn.org\/faq\/2015-07-16\/air-quality-scale-in-quebec-and-montreal\/hk\/)"});}catch(e){}</script><a id='share-twitter' href='http://www.twitter.com/share?url=https%3A%2F%2Faqicn.org%2Ffaq%2F2015-07-16%2Fair-quality-scale-in-quebec-and-montreal%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>Air Quality Scale in Quebec and Montreal<br>(https:\/\/aqicn.org\/faq\/2015-07-16\/air-quality-scale-in-quebec-and-montreal\/hk\/)"});}catch(e){}</script><a id='share-reddit' href='https://reddit.com/submit?url=https%3A%2F%2Faqicn.org%2Ffaq%2F2015-07-16%2Fair-quality-scale-in-quebec-and-montreal%2Fhk%2F&title=Air+Quality+Scale+in+Quebec+and+Montreal' 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>Air Quality Scale in Quebec and Montreal<br>(https:\/\/aqicn.org\/faq\/2015-07-16\/air-quality-scale-in-quebec-and-montreal\/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='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/'>aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/</a></i><br><div class='entry-content' ng-controller='MainController as ctrl'> <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> <p>例如，日期為 7 月 14 日下午 2:00，您<a href='/city/montreal/hk/'>網站</a>上的大多數指數範圍為 53 到 65（其中一個指數為 37），並且應該是即時 AQI。<a href='http://ville.montreal.qc.ca/portal/page?_pageid=7237,74495616&_dad=portal&_schema=PORTAL'>蒙特婁市</a>網站上，日期為7月14日下午2點，大部分指數範圍為16至37，也是即時AQI。</p> <p>那麼，您能解釋一下差異以及您使用的標準細節嗎？</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><br>oOo<br><br></center> <p>正如我們在<a href='faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/'>之前的一篇文章</a>中所解釋的，世界空氣品質指數項目中發布的所有 AQI 數據目前<sup><a href="#nowcast-footnote-1">[1]</a></sup>使用美國 EPA 標準。蒙特利爾和魁北克都沒有遵守此規則，因此這證實了<a href='/city/montreal/hk/'>城市/蒙特利爾</a>頁面上顯示的值正在使用美國 EPA 標準。</p> <p>這就是為什麼世界空氣品質指數專案讀數與蒙特利爾市網站 ( <a href='http://ville.montreal.qc.ca/portal/page?_pageid=7237,74495616&_dad=portal&_schema=PORTAL'>montreal.qc.ca</a> ) 之間存在差異的原因：蒙特利爾市 EPA（環保署）正在使用自己適當的 AQI 等級，該等級在同一個網站。為了使其稍微「複雜」一些，與蒙特利爾（塔巴納克！）相比，魁北克實際上使用了另一種 AQI 量表（<a href='http://www.iqa.mddefp.gouv.qc.ca/contenu/calcul.htm'>在此連結中指定</a>）。當然，加拿大正在使用另一種量表，稱為空氣品質健康指數 AQHI - 但這是我們在另一篇<a href='/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index'>文章</a>中已經寫過的內容。</p> <br> <p>下表列出了蒙特利爾和魁北克省 AQI 斷點總結：</p> <center> <table class='fancy' style='width:90%;'> <tr style='background-color:#ccf;'> <th rowspan=2>Pollutant <th colspan=2 style='border-left:2px solid black;'>Quebec <th colspan=2 style='border-left:2px solid black;'>Montreal <tr style='background-color:#ccf;font-size:12px;'> <th style='border-left:2px solid black;'>Averaging Period <th>Reference Value <th style='border-left:2px solid black;'>Averaging Period <th>Reference Value <tr> <td>Fine Particles (PM<sub>2.5</sub>) <td style='border-left:2px solid black;'>3 hours <td>35µg/m3 <td style='border-left:2px solid black;'>3 hours <td>35µg/m3 <tr> <td>Ozone (O<sub>3</sub>) <td style='border-left:2px solid black;'>1 hour <td>82 ppb <td style='border-left:2px solid black;'>1 hour <td>160 µg/m3 <tr> <td>Nitrogen dioxide (NO<sub>2</sub>) <td style='border-left:2px solid black;'>1 hour <td>213 ppb <td style='border-left:2px solid black;'>1 hour <td>400 µg/m3 <tr> <td>Sulfur dioxide (SO<sub>2</sub>) <td style='border-left:2px solid black;'>4 minutes mobile <td>213 ppb <td style='border-left:2px solid black;'>10 minutes mobile <td>500 µg/m3 <tr> <td>Carbon monoxide (CO) <td style='border-left:2px solid black;'>1 hour <td>30 ppm <td style='border-left:2px solid black;'>1 hour <td>35 µg/m3 </table> </center> <br> <center><br>oOo<br><br></center> <p>為了將這些值轉換為美國 EPA 標準，需要以毫克或<a href='https://en.wikipedia.org/wiki/Parts-per_notation'>ppb/ppm</a> （每十億/百萬顆粒數）表示的原始濃度。</p> <p>不幸的是，蒙特利爾和魁北克縣都沒有提供這些原始濃度。相反，他們僅提供已轉換為各自 AQI 等級的空氣品質讀數。但這其實不是問題，因為可以使用這個簡單的線性公式來重新轉換為濃度：</p> <center><code>Raw concentration (pollutant) = Reference value (pollutant) * AQI }(pollutant) / 50</code></center> <p>例如，如果在蒙特婁市網站上發布的 PM <sub>2.5</sub> AQI 值為 18，則原始濃度（以毫克為單位）為 18*35/50 = 12.6 mg/m3。請注意，對於臭氧、CO、SO <sub>2</sub>和 NO <sub>2</sub> ，魁北克和蒙特利爾的單位有所不同（魁北克為 ppb - 美國標準，蒙特利爾歐盟標準為 mg），但這只是額外的轉換（<a href='/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast'>本文</a>部分解釋）。</p> <p>請注意，PM <sub>2.5</sub> AQI 是基於 3 小時平均值，而在世界空氣品質指數項目中，使用每小時<a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'>PM <sub>2.5</sub> Instant Cast</a> AQI 報告。由於無法從 3 小時平均值中扣除每小時數據，這實際上意味著蒙特利爾和魁北克世界空氣品質指數項目報告的 PM <sub>2.5</sub> AQI 並不完全是「即時廣播」報告。</p> <center><br>oOo<br><br></center> <p>最後，這是 PM <sub>2.5</sub>和臭氧的 3 個 AQI 等級（美國 EPA、魁北克和蒙特利爾）的視覺比較（請注意，對於臭氧，使用 ppm 單位 - 因此蒙特利爾的毫克到 ppm 的轉換）。</p> <p>值得注意的一點是，魁北克省和蒙特利爾都使用 AQI 值 25 作為良好（綠色）和可接受（黃色）之間的斷點，而美國 EPA 的這一斷點設置為 50。因此，總而言之，在考慮在正確的轉換和斷點的情況下對蘋果進行比較時，美國EPA 標準和魁北克/蒙特利爾標準報告的AQI 範圍非常相似。</p> <table width=100% id='pm-table'> <tr> <div id='scale-pm25'></div> <div id='scale-o3'></div> </table> <script src="/jscripts/forecast/d3.v3.min.js"></script> <script src='/air/view/faq/images/aqi-scales/scales-viewer.min.js?_=1555547488'></script><link href='/air/view/faq/images/aqi-scales/scales-viewer.css?_=1555547488' rel='stylesheet'/> <script type="text/javascript"> function doInitPage() { var scales=new AqiScale({"montreal":{"standard":{"epa":"Ville de Montr\u00e9al","url":"http:\/\/ville.montreal.qc.ca\/portal\/page?_pageid=7237,74495616&_dad=portal&_schema=PORTAL","unit":["IQA","indice de la qualit\u00e9 de l\u2019air"]},"flag":"ca","levels":[{"range":25,"title":"Bon","color":"#78a22f","description":"-"},{"range":50,"title":"Aceptable","color":"#f5dd27","description":"-"},{"range":2000,"title":"Mauvais","color":"#ef4035","description":"-"}],"units":{"o3":"ug\/m3","no2":"ug\/m3","so2":"ug\/m3","co":"mg\/m3"},"pm25":[[25,17.5],[50,35],[100,70],[200,140],[300,210],[400,280],[500,350]],"o3":[[25,0.08],[50,0.16],[100,0.32],[200,0.74],[300,1.06]]},"quebec":{"standard":{"epa":"Minist\u00e8re du D\u00e9veloppement durable, de l\u2019Environnement et de la Lutte contre les changements climatiques","url":"http:\/\/www.iqa.mddefp.gouv.qc.ca\/contenu\/index.asp","unit":["IQA","indice de la qualit\u00e9 de l\u2019air"]},"flag":"ca","levels":[{"range":25,"title":"Bon","color":"#00ce00","description":"-"},{"range":50,"title":"Aceptable","color":"#ffff00","description":"-"},{"range":2000,"title":"Mauvais","color":"#ff0000","description":"-"}],"pm25":[[25,17.5],[50,35],[100,70],[200,140],[300,210],[400,280],[500,350]],"o3":[[25,0.041],[50,0.082],[100,0.164],[200,0.338],[300,0.502]]},"us":{"standard":{"epa":"United States Environmental Protection Agency","url":"http:\/\/epa.gov","unit":["AQI","Air Quality Index"]},"levels":[{"range":50,"title":"Good","color":"#009966","description":"Air quality is considered satisfactory, and air pollution poses little or no risk","textcolor":"#ffffff"},{"range":100,"title":"Moderate","color":"#ffde33","description":"Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution."},{"range":150,"title":"Unhealthy for Sensitive Groups","color":"#ff9933","description":"Members of sensitive groups may experience health effects. The general public is not likely to be affected."},{"range":200,"title":"Unhealthy","color":"#cc0033","description":"Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects","textcolor":"#ffffff"},{"range":300,"title":"Very Unhealthy","color":"#660099","description":"Health warnings of emergency conditions. The entire population is more likely to be affected.","textcolor":"#ffffff"},{"range":500,"title":"Hazardous","color":"#7e0023","description":"Health alert: everyone may experience more serious health effects","textcolor":"#ffffff"}],"pm25":[{"aqi":50,"conc":12,"color":"#009966"},{"aqi":100,"conc":35.5,"color":"#ffde33"},{"aqi":150,"conc":65.5,"color":"#ff9933"},{"aqi":200,"conc":150.5,"color":"#cc0033"},{"aqi":300,"conc":250.5,"color":"#660099"},{"aqi":400,"conc":350.5,"color":"#660099"},{"aqi":500,"conc":500.4,"color":"#7e0023"}],"pm10":[{"aqi":50,"conc":55,"color":"#009966"},{"aqi":100,"conc":155,"color":"#ffde33"},{"aqi":150,"conc":255,"color":"#ff9933"},{"aqi":200,"conc":355,"color":"#cc0033"},{"aqi":300,"conc":425,"color":"#660099"},{"aqi":400,"conc":505,"color":"#660099"},{"aqi":500,"conc":605,"color":"#7e0023"}],"o3":[{"aqi":100,"conc":0.125,"color":"#ffde33","skip":true},{"aqi":150,"conc":0.165,"color":"#ff9933"},{"aqi":200,"conc":0.205,"color":"#cc0033"},{"aqi":300,"conc":0.405,"color":"#660099"},{"aqi":500,"conc":0.605,"color":"#7e0023"}],"o3_8":[{"aqi":50,"conc":0.0625,"color":"#009966"},{"aqi":100,"conc":0.076,"color":"#ffde33"},{"aqi":150,"conc":0.096,"color":"#ff9933"},{"aqi":200,"conc":0.116,"color":"#cc0033"},{"aqi":300,"conc":0.375,"color":"#660099"}],"no2_24":[[50,54],[100,100],[150,361],[200,650],[300,1250],[400,1650],[500,2040]],"so2_24":[[50,35],[100,76],[150,186],[200,305],[300,605],[400,805],[500,1004]]}}); var width = document.getElementById("pm-table").clientWidth * .95; compareScales("scale-pm25", scales.countries(["us", "montreal", "quebec"], "pm25"), 350, width, "mg/m3", "PM25 scales comparison" ); compareScales("scale-o3", scales.countries(["us", "montreal", "quebec"], "o3"), .5, width, "ppb", "1-hour Ozone scales comparison" ); } doInitPage(); </script> <div style='border-top:1px solid black;width:120px;'></div> <div id='nowcast-footnote-1'> [1] <span>我們現在正在開發一個選項，允許使用者選擇他們想要的任何 AQI 等級。</span> </div> <br> <br> <link rel='stylesheet' href='/images-static/flags.css/css/flag-icon.min.css' /> <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='color:#444;background-color:#eee;padding:10px;margin:10px;border:1px dashed black;'> <b>Note</b>: <span>本文是全球空氣品質等級系列文章的一部分。</span> <br> <br> <span>有關特定國家或大陸的更多信息，請參閱這些文章：</span> <a href='/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/hk/'> <div class='flag flag-icon-background flag-icon-th' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-my' style='width:22px;height:12px;display:inline-block;'></div> <span>泰國和馬來西亞</span> </a> - <a href='/faq/2015-05-15/india-national-air-quality-index/hk/'> <div class='flag flag-icon-background flag-icon-in' style='width:22px;height:12px;display:inline-block;'></div> <span>印度</span> </a> - <a href='/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/hk/'> <div class='flag flag-icon-background flag-icon-cn' style='width:22px;height:12px;display:inline-block;'></div> China </a> - <a href='/faq/2015-06-03/overview-of-hong-kongs-air-quality-health-index/hk/'> <div class='flag flag-icon-background flag-icon-hk' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-ca' style='width:22px;height:12px;display:inline-block;'></div> <span>香港/加拿大（空氣品質健康指數）</span> </a> - <a href='/faq/2015-05-30/air-quality-forecast-in-south-america/hk/'> <div class='flag flag-icon-background flag-icon-br' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-co' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-ec' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-pe' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-cl' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-mx' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-ar' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-uy' style='width:22px;height:12px;display:inline-block;'></div> <div class='flag flag-icon-background flag-icon-pr' style='width:22px;height:12px;display:inline-block;'></div> <span>南美洲</span> </a> - <a href='/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/hk/'> <div class='flag flag-icon-background flag-icon-au' style='width:22px;height:12px;display:inline-block;'></div> <span>澳洲</span> </a> - <a href='/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/hk/'> <div class='flag flag-icon-background flag-icon-ca' style='width:22px;height:12px;display:inline-block;'></div> <span>魁北克和蒙特利爾</span> </a> - <a href='/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/hk/'> <div class='flag flag-icon-background flag-icon-sg' style='width:22px;height:12px;display:inline-block;'></div> <span>新加坡</span> </a> - <a href='/faq/2015-09-03/air-quality-scale-in-poland/hk/'> <div class='flag flag-icon-background flag-icon-pl' style='width:22px;height:12px;display:inline-block;'></div> <span>波蘭</span> </a> - <a href='/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/hk/'> <div class='flag flag-icon-background flag-icon-id' style='width:22px;height:12px;display:inline-block;'></div> <span>印尼</span> </a>. <p>有關 24 小時平均使用量或臭氧和顆粒物 (PM <sub>2.5</sub> ) 的信息，請參閱這兩篇文章：<a href='/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/hk/'>地面臭氧指數</a>- <a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'>PM <sub>2.5</sub> Instant Cast</a></p> </div> </div></div></div></div><center style='border-top: 1px solid #ccc'><center style='margin:10px 0;'><ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-0281575029452656" data-ad-slot="2455076269" data-ad-format="auto"></ins></center><script>(adsbygoogle = window.adsbygoogle || []).push({});</script><div class='section-content'><a href='/faq/" . srvLang() . "'><span>按一下此處查看所有常見問題解答條目</span></a><div style='margin-left: 20px;line-heigh:1.5;color:#888;' class='faqmore'><style type='text/css'>.faqmore li a:hover {background: #62a6c8;color: white;text-decoration: none;}.faqmore li a {color: #888;}</style><li><a href='https://aqicn.org/scale/hk/'>AQI Scale: What do the colors and numbers mean?</a></li><li><a href='https://aqicn.org/faq/using-statistical-distances-for-real-time-sensor-networks-validation/hk/'>Using Statistical Distances for Real-time Sensor Networks Validation</a></li><li><a href='https://aqicn.org/faq/2017-01-10/nitrogen-dioxyde-no2-in-our-atmosphere/hk/'>Nitrogen Dioxyde (NO<sub>2</sub>) in our atmosphere</a></li></div><div style='height:1px;background-color:#aaaaaa;width:220px;margin-top:5px;'></div><center><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></center><div id='ntf-body-first' style='display:none;'></div><script>function ntfConf() {return {page: "faq",divId: "ntf-body-first"}}</script></div></center><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='h1header3' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>關於空氣質量與空氣污染指數</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header3',.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>關於這個項目</h3><br><li><a href='/contact/hk/'>聯繫世界空氣品質指數團隊</a></li><li><a href='/media/hk/'>新聞和媒體工具包</a></li><br><h3><a href='/research/hk/'>空氣品質研究</a></h3><br><li><a href='/faq/hk/'>空氣質量的知識庫和文章</a></li><li><a href='/research/hk/'>空氣品質實驗</a></li><li><a href='/sensor/hk/'>空氣品質傳感器分析</a></li><br><h3><a href='/faq/hk/'>常問問題</a></h3><br><li><a href='/sources/hk/'>空氣品質數據來源</a></li><li><a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hk/'>空氣品質指數的計算</a></li><li><a href='/forecast/hk/'>空氣品質預報</a></li><li><a href='/products/hk/'>空氣質量的產品（口罩，監示器......）</a></li><li><a href='/api/hk/'>API（應用程式介面）</a></li><li><a href='/data-platform/hk/'>歷史數據平台</a></li></div><div class='footercolumn2 footercolumn'><h3>Credits</h3><br><li><a href='/sources/hk/'>世界上所有的 EPA 在維護、測量和向世界公民提供空氣品質資訊方面所做的出色工作</a></li><li><a href='http://www.maxmind.com' target=_>該產品包括 MaxMind 創建的 GeoLite2 數據，可從 maxmind.com 取得。</a><li><a href='http://geonames.org' target=_>該產品包括 GeoNames 城市訊息，可從 geonames.org 取得。</a><li><a href="http://openweathermap.org/" target="__s">開放式天氣地圖，結合qweather™改良演算法</a><li><a href='http://wxqa.com' target="__s">公民天氣觀察員計劃</a> via <a href='https://cwop.waqi.info' target="__s">cwop.waqi.info</a><li><a href="http://atmosphere.copernicus.eu/" target="__s">包含修改後的哥白尼大氣監測服務訊息</a><li><a href="https://www.flaticon.com/" target="__s" title="Flaticon">一些由 Freepik 製作的圖標，來自 www.flaticon.com</a><li><a href="https://locationiq.com/" target="__s" title="location IQ">透過 locationiq.com 進行反向地理編碼</a><li><a href="https://www.openstreetmap.org/copyright" target="__s" title="Open Street Map">來自 OpenStreetMap 的底圖和資料。</a></div><div class='footercolumn3 footercolumn'><center>© 2008-2024<br><a href='https://waqi.info'><span>世界空氣品質指數項目</span></a><br><br><img src='https://waqi.info/icons/logo.png?_=1732579340' 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?_=1732579340' 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/2015-07-16/air-quality-scale-in-quebec-and-montreal/' >English - 英語</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//cn' >简体中文 - 簡體中文</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//jp' >日本</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//es' >español - 西班牙人</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//kr' >한국의 - 韓國</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ru' >русский - 俄</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hk' selected>繁體中文</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//fr' >Francais - 法國人</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//pl' >Polski - Polish</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//de' >Deutsch - German</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//pt' >Português - Portuguese</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//vn' >Tiếng Việt - Vietnamese</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//it' >Italiano - Italian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//id' >bahasa Indonesia - Indonesian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//nl' >Nederlands - Dutch</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//fa' >فارسی - Persian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//th' >ภาษาไทย - Thai</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hu' >Magyar - Hungarian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//el' >Ελληνικά - Greek</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ro' >Română - Romanian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bg' >български - Bulgarian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ur' >اردو - Urdu</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hi' >हिंदी - Hindi</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//ar' >العربية - Arabic</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//sr' >Српски - Serbian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bn' >বাংলা - Bangla</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//bs' >босански - Bosnian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//hr' >hrvatski - Croatian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//tr' >Türkçe - Turkish</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//uk' >українська - Ukrainian</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//cs' >čeština - Czech</option><option value='https://aqicn.org/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal//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>