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href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//ro'><div title='Romanian' class='sprite-isprt-web-ro flag-ro'>🇷🇴</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//bg'><div title='Bulgarian' class='sprite-isprt-web-bg flag-bg'>🇧🇬</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//ur'><div title='Urdu' class='sprite-isprt-web-pk flag-ur'>🇵🇰</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//hi'><div title='Hindi' class='sprite-isprt-web-in flag-hi'>🇮🇳</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//ar'><div title='Arabic' class='sprite-isprt-web-ae flag-ar'>🇦🇪</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//sr'><div title='Serbian' class='sprite-isprt-web-rs flag-sr'>🇷🇸</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//bn'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//bs'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//hr'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//tr'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//uk'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//cs'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//be'><div title='Belarusian' class='sprite-isprt-web-by flag-be'>🇧🇾</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//km'><div title='Khmer' class='sprite-isprt-web-kh flag-km'>🇰🇭</div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//lo'><div title='Lao' class='sprite-isprt-web-la flag-lo'>🇱🇦</div></a></div><div id='hdrlang-navigation'><div id='hdrlang-navigation-inner' class='hdrlang-navigation'><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/' class='lang-en'><div class='item'><div class='flag sprite-isprt-web-gb'></div><span class='name'>English</span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//cn' class='lang-zh-CN'><div class='item'><div class='flag sprite-isprt-web-cn'></div><span class='name'>Chinese <span>- 简体中文</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//jp' class='lang-ja'><div class='item'><div class='flag sprite-isprt-web-jp'></div><span class='name'>Japanese <span>- 日本</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//es' class='lang-es'><div class='item'><div class='flag sprite-isprt-web-es'></div><span class='name'>Spanish <span>- español</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//kr' class='lang-ko'><div class='item'><div class='flag sprite-isprt-web-kr'></div><span class='name'>Korean <span>- 한국의</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//ru' class='lang-ru'><div class='item'><div class='flag sprite-isprt-web-ru'></div><span class='name'>Russian <span>- русский</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//hk' class='lang-zh-TW'><div class='item'><div class='flag sprite-isprt-web-hk'></div><span class='name'>Traditional Chinese <span>- 繁體中文</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//fr' class='lang-fr'><div class='item'><div class='flag sprite-isprt-web-fr'></div><span class='name'>French <span>- Francais</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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/2015-05-30/air-quality-forecast-in-south-america//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><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//km' class='lang-km'><div class='item'><div class='flag sprite-isprt-web-kh'>🇰🇭</div><span class='name'>Khmer <span>- ខ្មែរ</span></span></div></a><a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america//lo' class='lang-lo'><div class='item'><div class='flag sprite-isprt-web-la'>🇱🇦</div><span class='name'>Lao <span>- ລາວ</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="" 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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;;;'>Air Quality Forecast in South America</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header1',.88,{maxfs:45}); }; </script><style>.section-outer {text-align: initial;}.section-content {max-width: 95%;width: 1100px;font-size: 18px;min-height: 300px;text-align: initial;margin-top: 10px;margin-bottom: 10px;line-height: 1.8;margin-left: auto;margin-right: auto;}.section-content-tight {min-height: 0px;}.section-content-alt {background-color: #f0f0f0;border-top: 1px solid #ccc;border-bottom: 1px solid #ddd};.section-banner {background-size: 100%;background: url(https://aqicn.org/images//bluesky-banner-panoramic.jpg) no-repeat center bottom #eee;margin-top: -2px;z-index: -1;border-bottom: 1px solid #888;width: 100%;}.h2-title {font-family: inherit;font-size: 1.1em;overflow: hidden;text-align: center;text-transform: capitalize;}.h2-title:before,.h2-title:after {background-color: #ddd;content: '';display: inline-block;height: 1px;position: relative;vertical-align: middle;width: 50%;}.h2-title:before {right: 0.5em;margin-left: -50%;}.h2-title:after {left: 0.5em;margin-right: -50%;}@media only screen and (max-width: 800px) {.section-content {line-height: 1.6;max-width: 98%;min-height: 10px;}.section-banner {display: none;}}</style><div class='whitebody' style='font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;'><div class='section-outer'><div class='section-content' ><i>Posted on May 30<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%2F2015-05-30%2Fair-quality-forecast-in-south-america%2Flo%2F&redirect_uri=https%3A%2F%2Faqicn.org%2Ffaq%2F2015-05-30%2Fair-quality-forecast-in-south-america%2Flo%2F' class='ui-share-btn' title=''><svg viewBox="0 0 24 24" 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America<br>(https:\/\/aqicn.org\/faq\/2015-05-30\/air-quality-forecast-in-south-america\/lo\/)"});}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;'>ແບ່ງປັນ: <a href='https://aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/lo/'>aqicn.org/faq/2015-05-30/air-quality-forecast-in-south-america/lo/</a></i><br><div class='entry-content' ng-controller='MainController as ctrl'> <p> The Air Quality forecast for South America is now available on the <a href='/home/lo//'>World Air Quality Index project</a>, in parnership with the Brazilian <i>Centro de Previsão do Tempo e Estudos Climáticos (<a href='http://www.cptec.inpe.br/home/in'>CPTEC</a>)</i>. The forecast can be accessed freely accessed from <a href='http://meioambiente.cptec.inpe.br'>cptec.inpe.br</a> as well as <a href='/forecast/south-america/lo/'>forecast/ south-america/lo/</a>. </p> <div style='float:right;padding-left:10px;'> <div id="worldmap" style="width: 380px; height: 520px; "></div> </div> <p> The CPTEC team has done an excellent work at providing a simple and detailed <a href='http://meioambiente.cptec.inpe.br/modelo_cattbrams.php?lang=en'>explanation</a> on the underlying concepts used by their forecast model, called <a href='http://brams.cptec.inpe.br/'>BRAMS</a> (for <i> Brazilian developments on the Regional Atmospheric Modelling System</i>). The picture below (from the CPTEC) is giving an insight on the workflow for their model (source -> transport -> deposition). </p> <br> <center> <img src='/images/forecast/catt_brams_3d_model_grid_box.jpg' style='width:500px;max-width:90%'> </center> <br> <br> <p> One of the minor issue with the system used by the CPTEC is the input sources which are only based on moderation of biomass burning and <a href='http://en.wikipedia.org/wiki/Human_impact_on_the_environment'>anthropogenic </a> (human made) pollution. To be even more complete, it would further benefit from taking input data from global sources: for instance from the sahara dust (which indeed crosses the atlantic). So, just like the <a href='/faq/2015-03-23/air-quality-forecasting-how-accurate-can-it-be/'>accuracy study</a> we did not the Asian Air Quality forecast from Sprintars, you can find below the forecast accuracy analysis for BRAMS for 5 cities in South America. </p> <center style='color:#888'>.oOo.</center><br> <script src="/jscripts/forecast/d3.v3.min.js"></script> <script src="/jscripts/forecast/topojoson.v1.min.js"></script> <script src='/jscripts/leaflet/leaflet-src.min.js?_=20190418.093124&type=script'></script><link href='/jscripts/leaflet/leaflet.min.css?_=20190418.093124&type=css' rel='stylesheet'/><script src="/jscripts/leaflet/Leaflet.MakiMarkers.js"></script> <script src="/air/view/stats/moment.min.js"></script> <script src='/air/view/forecast/scripts/dist/forecast-page.js?_=20250104.200356&type=script'></script> <script> var Esri_WorldTopoMap = L.tileLayer('http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/{z}/{y}/{x}', { attribution: 'Tiles © Esri — Esri, DeLorme, NAVTEQ, TomTom, Intermap, iPC, USGS, FAO, NPS, NRCAN, GeoBase, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), and the GIS User Community' }); var model = { tiles: Esri_WorldTopoMap, start: 0, stop: 32, opacity: function(i) { return 1 }, view: [new L.LatLng(-25, -60), 3], transform: { "scale": [60 / 550, -68 / 622], "translate": [-90, 18] }, continent: "cptec-inpe", pol: "pm25", autoscale: false, actualcolor: true }; function initPage() { var forecast = new ForecastLoader(model); } </script> <style type="text/css"> .forecastgraphin { padding: 5px; margin-bottom: 5px; border: 1px solid #aaa; background-color: #eeeeee; -box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); } .forecastgraph { font-size: 15px; display: inline-block; width: 100%; padding: 0px; text-align: left; color: #888888; margin-left: 10px; margin-right: 10px; } .graphtitle { text-shadow: 1px 1px 0 white; font-size: 18px; min-width: 300px; margin: 0px; height: 8px; color: black; border-bottom: 0px solid black; } .forecast-country { font-size: 28px; height: 40px; } .hline { stroke-width: .3; stroke: #ffffff; } .hmline { shape-rendering: crispEdges; stroke-width: 1px; stroke: #cccccc; } .vline { stroke: #cccccc; shape-rendering: crispEdges; stroke-width: 1px; xstroke-dasharray: 2, 3; } .vlinetext { font-size: 10px; } .rect { stroke: #ffffff; stroke-width: 1; } .hlinetext { background-color: yellow; font-size: 10px; } #forecastdiv {} .aqiv { border: 1px solid #888; background-color: white; border-radius: 2px; -moz-border-radius: 2px; -webkit-border-radius: 2px; -box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); } .axis path, .axis line { fill: none; stroke: #ccc; stroke-width: 1px; shape-rendering: crispEdges; } .axis text {} button { background-color: #4ebb44; border: none; font-family: "dropplets"; color: #ffffff; text-align: center; width: 70px; font-size: 20px; padding: 5px; cursor: pointer; -moz-transition-duration: 0.1s; -webkit-transition-duration: 0.1s; } button:hover { box-shadow: inset 0 0 20px rgba(54, 124, 49, 0.75); text-shadow: 0 0 10px rgba(54, 124, 49, 0.75); } </style> Forecast advance: <button onclick="showForecast(1)" id='btnForecast1'>Day +1</button> <button onclick="showForecast(2)" id='btnForecast2'>Day +2</button> <button onclick="showForecast(3)" id='btnForecast3'>Day +3</button> <button onclick="showForecast(4)" id='btnForecast4'>Day +4</button> <button onclick="showForecast(5)" id='btnForecast5'>Day +5</button> <br> <br> <div id='forecastdiv'></div> <script type="text/javascript"> function showForecast(n) { for (var c in countries) { c = countries[c]; var id = "div-" + c.country.replace(" ", "-").replace("/", "-"); loadCity(c.cities, 0, id, n); }; } function doInitPage() { for (var c in countries) { c = countries[c]; var id = "div-" + c.country.replace(" ", "-").replace("/", "-"); d3.select("#forecastdiv"). append("div"). attr("class", "forecast-country"). html(c.country); d3.select("#forecastdiv"). append("div"). attr("id", id); loadCity(c.cities, 0, id, 1); }; } var countries = [{ country: "Brazil", cities: ["SaoPaulo"] }, { country: "Colombia", cities: ["Bogota"] }, { country: "Ecuador", cities: ["Quito"] }, { country: "Chile", cities: ["Santiago"] }, { country: "Peru", cities: ["Lima"] } ]; function loadCountries(n) { for (var c in countries) { c = countries[c]; var id = "div-" + c.country.replace(" ", "-").replace("/", "-"); d3.select("#forecastdiv"). append("div"). attr("class", "forecast-country"). html(c.country); d3.select("#forecastdiv"). append("div"). attr("id", id); loadCity(c.cities, 0, id, n); }; } var allCities = []; function loadCity(cities, idx, id, n) { var city = cities[idx]; var id2 = (id + city).replace("/", "-"); if (typeof allCities[city] == "undefined") { d3.select("#" + id).append("div"). attr("id", "wait-" + id2). html("<div id='wait' style='padding:5px;font-size:12px;'>Loading, please wait...<br><img src='https://aqicn.org/images/loader3.64x64.gif' ></div>"); var url = "/air/services/forecast/?city=" + cities[idx] + "&historic"; d3.json(url, function(error, d) { allCities[city] = d; d3.select("#" + id).append("div").attr("id", id2); plotForecastHistoric(city, d, id2, n); if (city == "Beijing") d3.select("#forecastbeijing").html(d3.select("#" + id2).html()); if (++idx < cities.length) loadCity(cities, idx, id, n); }); } else { setTimeout(function() { d3.select("#" + id2).html(""); plotForecastHistoric(city, allCities[city], id2, n); if (++idx < cities.length) loadCity(cities, idx, id, n); }, 10); } } function plotForecastHistoric(city, d, id, fcastday) { d3.select("#wait-" + id).style("display", "none"); var row = fcastday; var width = document.getElementById("forecastdiv").clientWidth - 20; var height = 50 + ((100 - 50) * row / 4); var margin = 0; var elt = "#" + id; var self = this; list = []; days = []; nodes = []; var maxt = d.maxt * 1000, mint = d.mint * 1000; mint = maxt - 14 * 60 * 60 * 24 * 1000; if (0) maxt = maxt + 1 * 60 * 60 * 24 * 1000; var atz = function(t) { var offset = new Date().getTimezoneOffset() / 60; return (t + (9 + offset) * 60 * 60) * 1000; }; d.forecast.forEach(function(d) { if (d.d && d.d.length) { days.push(d.u); d.d.forEach(function(x, i) { var day = Math.floor(i / 8); var t = atz(x[0]); if (day >= 1 && day <= fcastday && t < maxt && t >= mint) { nodes.push({ x: t, y: day, z: x[1], z0: x[2], u: d.u, v: d.vt, i: i }); } }); } }); actual = []; d.real.forEach(function(d) { var t = atz(d[0]); if (t >= mint && t < maxt) actual.push({ x: t, z: d[1], y: 0 }); }); actual.forEach(function(v) { nodes.push(v); }); var div = d3.select(elt) .append('div').attr('class', 'forecastgraph') .append('div').attr('class', 'forecastgraphin'); div.append("div").attr("class", "graphtitle").html(city); var svg = div.append('svg') .attr('width', width) .attr('height', height) .attr("class", "chart"); var chart = svg.append('g') .attr('class', 'nodes all') .attr("transform", "translate(0,0)"); var xx = d3.time.scale.utc().domain([mint, maxt]).rangeRound([80, width - 20]); var yy = d3.scale.linear().domain([0, row + 1]).rangeRound([20, height - 10]); var bh = yy(1) - yy(0); var bw = (width - 80) * 3 * 60 * 60 * 1000 / (maxt - mint); /* --------------- */ chart.selectAll("hline1") .data(d3.range(row + 2)) .enter().append("line") .attr("class", "hmline") .attr("x1", 0) .attr("x2", width) .attr("y1", function(d) { return yy(d); }) .attr("y2", function(d) { return yy(d); }); chart.selectAll("hlinet") .data(d3.range(row + 1)) .enter().append("text") .attr("class", "hlinetext") .attr("x", 1) .attr("y", function(d) { return yy(d) + bh - 3; }) .attr("text-anchor", "left") .text(function(v) { if (v == 0) return "Actual AQI"; return "Forecast day+" + v; }); /* --------------- */ var line = d3.select(elt).append("div").attr("class", "line") .style("position", "fixed") .style("top", 0).style("bottom", 0) .style("display", "none").style("width", "1px") .style("background-color", "#888") .style("pointer-events", "none"); var aqiv = d3.select(elt).append("div").attr("class", "aqiv") .style("position", "fixed") .style("display", "none") .style("font-size", "10px") .style("text-align", "center") .style("line-height", "1.38") .style("width", "28px") .style("height", "32px") .style("pointer-events", "none"); var onmousemove = function(obj, node, x) { x = d3.event.x; var y = d3.event.y; var txt = ""; var w = 60, h = 58; var m = moment(node.x); var t = m.format("ddd Do h:mm a"); if (typeof node.u == "undefined") { w = 95; var aqi = "<span style='font-size:22px;'><small>AQI</small>: " + node.z + "</span>"; txt = aqi + "<br><small>measured on</small><br>" + t + ""; } else { w = 110; h = 75; var aqi = "<span style='font-size:18px;'><small>AQI</small>: " + node.z0 + "~" + node.z + "</span>"; var t1 = m.format("ddd Do h") + " &dash; " + m.add(3, "hours").format("h a"); var t2 = moment(node.u).format("ddd Do"); txt = aqi + "<br><small>forecasted for</small><br>" + t1 + "<br><small>and computed on</small><br>" + t2 + "</small>"; if (0) { w = 120; h = 120; txt += "<br>" + node.v.stime + "<br>" + node.v.lmodif + " [" + node.i + "]"; } } line.style("display", "").style("left", x + "px"); aqiv.style("display", ""). style("width", w + "px"). style("height", h + "px"). style("left", (x - w / 2) + "px"). style("top", (y - h - 10) + "px"). html(txt); }; var onmouseout = function() { aqiv.style("display", "none"); line.style("display", "none"); }; /* --------------- */ var colors = ["#ffffff", "#009966", "#ffde33", "#ff9933", "#cc0033", "#660099", "#660099"]; var map = d3.scale.linear() .domain(d3.range(0, 300, 300.0 / (colors.length - 1))) .range(colors); var aqi2color1 = function(v) { if (v >= 300) return "#7e0023"; c = map(v); return c; }; var aqi2color = function(v) { if (v == "-") { return '#888888'; } else if (v <= 50) { return '#009966'; } else if (v <= 100) { return '#ffde33'; } else if (v <= 150) { return '#ff9933'; } else if (v <= 200) { return '#cc0033'; } else if (v <= 300) { return '#660099'; } else return '#7e0023'; }; var mh = bh * 1 / 10; chart .selectAll('rect') .data(nodes) .enter().append('rect') .attr('class', 'rect') .attr('x', function(node) { return Math.max(0, xx(node.x)); }) .attr('y', function(node) { return yy(node.y) + mh; }) .attr('width', bw) .attr('height', bh - mh * 2) .style('fill', function(node) { return aqi2color(node.z); }) .on("mouseout", function(node, i) { onmouseout(); }) .on("mousemove", function(node, i) { onmousemove(this, node, xx(node.x) + bw / 2); }); /* --------------- */ var xAxis = d3.svg.axis().scale(xx).orient("top"); chart.append("g").attr("class", "axis vlinetext").attr("transform", "translate(0,20)").call(xAxis); } doInitPage(); </script> </div></div></div></div><center style='border-top: 1px solid #ccc;padding:20px 0;border-bottom: 1px solid #ccc;'><style>#gaia-section-banner {word-break: break-word;cursor: pointer;font-size: 18px;line-height: 1.6;font-family: "Noto Serif", Cambria, "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif;text-align: center;word-break: break-all;margin: 0;padding: 0px;min-height: 0px;width: auto;max-width: 100%;text-align: center;word-break: break-word;transition: height .5s ease;overflow-y: hidden;}#gaia-section-banner>div>div {width: 33%;/* max-width: 420px; */}#gaia-section-banner a {background-color: rgba(0, 134, 200, .8);color: white;border-radius: 25px;border: none;padding: 8px 20px;margin-left: 18px;line-height: 1.42;}#gaia-section-banner>div {display: flex;align-items: center;justify-content: center;}#gaia-section-banner a div {font-size: 80%;white-space: nowrap;}#gaia-section-banner>div>img {height: 88px;}@media screen and (max-width: 700px) {#gaia-section-banner {text-align: center;height: auto;}#gaia-section-banner>div>img {max-width: 80%;max-height: 150px;height: auto;}#gaia-section-banner a {margin-right:18px;}#gaia-section-banner a div {font-size: 100%;white-space: unset;display: inline-block;}#gaia-section-banner>div {flex-direction: column;}#gaia-section-banner>div>div {width: 100%;}}#gaia-section-banner a:hover {text-decoration: none;}</style><div id='gaia-section-banner'><div><div style='display:block'><span>ເຈົ້າຮູ້ຈັກສະຖານີຄຸນນະພາບອາກາດຢູ່ໃນພື້ນທີ່ຂອງເຈົ້າບໍ?</span> <span>ເປັນຫຍັງບໍ່ເຂົ້າຮ່ວມແຜນທີ່ກັບສະຖານີຄຸນນະພາບອາກາດຂອງທ່ານເອງ?</span></div><img src='/air/view/gaia/images/gaia-series-a12-icon-with-map.png'><a href='/gaia/list/lo/' target=gaia_a08><span>ສຶກສາເພີ່ມເຕີມໄດ້ທີ່</span><div> > aqicn.org/gaia/ <</div></a></div></div><script>try {aqisrv.here().then(function(where) {var country = where.Country.IsoCode;var o = document.getElementById('gaia-section-banner');if (1 || country == 'FR' || country == 'ES') {o.style.display = '';o.style.visibility = 'visible';o.onclick = function() {window.location.assign('/gaia/list/lo/');}}}).catch(function(e) {});} catch (e) {}</script></center><center style='background-color: #ffffff;padding:20px 0;'><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></center><center style='padding:10px 0;border-top: 1px solid #ccc;'><div class='section-content' style='min-height:0;'><script src='/webapp/dist/mailing-dyn.b37d52498ecc6e0dde16.js?_=1737642178' type='text/javascript'></script><div id='ntf-body-first' style='display:none;'></div><script>function ntfConf() {return {page: "faq",divId: "ntf-body-first"}}</script></div></center><center style='border-top: 1px solid #ccc;background:white;padding-bottom:20px;'><div class='section-content'><a href='/faq/lo/'><h2>Click here to see all the FAQ entries</h2></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: #000;}</style><li><a href='https://aqicn.org/scale/lo/'>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/lo/'>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/lo/'>Nitrogen Dioxyde (NO<sub>2</sub>) in our atmosphere</a></li><li><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/lo/'>Ozone AQI Scale update</a></li><li><a href='https://aqicn.org/faq/2016-02-28/air-quality-forecasting-in-northern-india/lo/'>Air Quality Forecasting in Northern India</a></li><li><a href='https://aqicn.org/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/lo/'>A visual study of Wind impact on PM<sub>2.5</sub> Concentration</a></li><li><a href='https://aqicn.org/faq/2015-10-28/unep-air-quality-monitoring-station/lo/'>UNEP Air Quality Monitoring Station</a></li><li><a href='https://aqicn.org/faq/2015-09-21/health-effects-of-respiratory-exposure-to-sulphur-dioxide-/lo/'>Health effects of respiratory exposure to sulphur dioxide </a></li><li><a href='https://aqicn.org/faq/2015-09-20/asean-air-quality-tile-map-service/lo/'>Asean Air Quality Tile Map Service</a></li></div></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='h1header2' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>ກ່ຽວກັບການວັດແທກຄຸນນະພາບອາກາດ ແລະມົນລະພິດ:</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header2',.88,{maxfs:45}); }; </script><div class='whitebody' style='font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;'><div class='section-outer'><div class='section-content' ><center>ກ່ຽວກັບລະດັບຄຸນນະພາບອາກາດ<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"><thead><tr><td>-<td >ດັດຊະນີຄຸນນະພາບອາກາດ (AQI) ຄ່າ<td>Levels of Health Concern</td></tr></thead><tr style="background-color:#009966;"><td class='aqiwtxt' nowrap="true">0 - 50</td><td class='aqiwtxt'>ດີ</td><td class='aqiwtxt'>ຄຸນນະພາບທາງອາກາດຖືກພິຈາລະນາເປັນທີ່ພໍໃຈ, ແລະມົນລະພິດທາງອາກາດກໍ່ມີຄວາມສ່ຽງຫນ້ອຍຫຼືບໍ່ມີຄວາມສ່ຽງ</td></tr><tr style="background-color:#ffde33" class='aqibtxt'><td class='aqibtxt' nowrap="true">51 -100</td><td class='aqibtxt'>ປານກາງ</td><td class='aqibtxt'>ຄຸນນະພາບທາງອາກາດແມ່ນການຮັບຮອງ; ຢ່າງໃດກໍ່ຕາມ, ສໍາລັບບາງມົນລະພິດອາດມີຄວາມກັງວົນກ່ຽວກັບສຸຂະພາບໃນລະດັບປານກາງສໍາລັບຈໍານວນຜູ້ທີ່ມີຄວາມເຄັ່ງຕຶງທີ່ຜິດປົກກະຕິກັບການມົນລະພິດທາງອາກາດ.</td></tr><tr style="background-color:#ff9933;"><td class='aqibtxt' nowrap="true">101-150</td><td class='aqibtxt'>Unhealthy<br><small>for sensitive groups</small></td><td class='aqibtxt'>ສະມາຊິກຂອງກຸ່ມທີ່ມີຄວາມອ່ອນໄຫວອາດຈະມີຜົນກະທົບຕໍ່ສຸຂະພາບ ປະຊາຊົນທົ່ວໄປບໍ່ໄດ້ຮັບຜົນກະທົບ.</td></tr><tr style="background-color:#cc0033;"><td class='aqiwtxt' nowrap="true">151-200</td><td class='aqiwtxt'>ບໍ່ມີສຸຂະພາບດີ</td><td class='aqiwtxt'>ທຸກໆຄົນອາດຈະເລີ່ມປະສົບຜົນກະທົບດ້ານສຸຂະພາບ; ສະມາຊິກຂອງກຸ່ມທີ່ມີຄວາມອ່ອນໄຫວອາດຈະມີຜົນກະທົບດ້ານສຸຂະພາບທີ່ຮ້າຍແຮງຫຼາຍ</td></tr><tr style="background-color:#660099;"><td class='aqiwtxt' nowrap="true">201-300</td><td class='aqiwtxt'>Very<br>Unhealthy</td><td class='aqiwtxt'>ການເຕືອນໄພດ້ານສຸຂະພາບຂອງສະພາບສຸກເສີນ. ປະຊາກອນທັງຫມົດແມ່ນມັກຈະໄດ້ຮັບຜົນກະທົບ.</td></tr><tr style="background-color:#7e0023;"><td class='aqiwtxt' nowrap="true">300+</td><td class='aqiwtxt'>ອັນຕະລາຍ</td><td class='aqiwtxt'>ເຕືອນດ້ານສຸຂະພາບ: ທຸກໆຄົນອາດຈະມີຜົນກະທົບທາງສຸຂະພາບທີ່ຮ້າຍແຮງກວ່າເກົ່າ</td></tr></table></div><br>ເພື່ອຮູ້ເພີ່ມເຕີມກ່ຽວກັບຄຸນນະພາບອາກາດ ແລະມົນລະພິດ, ໃຫ້ກວດເບິ່ງ <a href='http://en.wikipedia.org/wiki/Air_quality'>ຫົວຂໍ້ຄຸນນະພາບອາກາດຂອງ wikipedia</a> ຫຼື <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>ຄູ່ມື airnow ກ່ຽວກັບຄຸນນະພາບອາກາດ ແລະສຸຂະພາບຂອງເຈົ້າ</a> .<br><br>ສໍາລັບຄໍາແນະນໍາດ້ານສຸຂະພາບທີ່ເປັນປະໂຫຍດຫຼາຍຂອງທ່ານຫມໍປັກກິ່ງ Richard Saint Cyr MD, ກວດເບິ່ງ blog <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>ແຈ້ງການນໍາໃຊ້</b>: ຂໍ້ມູນຄຸນນະພາບອາກາດທັງຫມົດແມ່ນບໍ່ຖືກຕ້ອງໃນເວລາທີ່ພິມເຜີຍແຜ່, ແລະເນື່ອງຈາກການຮັບປະກັນຄຸນນະພາບຂອງຂໍ້ມູນເຫຼົ່ານີ້ອາດຈະຖືກປັບປຸງ, ໂດຍບໍ່ມີຂໍ້ສັງເກດ, ໃນທຸກເວລາ. 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