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href='https://aqicn.org/forecast/chennai/bn/'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/forecast/chennai/bs/'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/forecast/chennai/hr/'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/forecast/chennai/tr/'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/forecast/chennai/uk/'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/forecast/chennai/cs/'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/forecast/chennai/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/forecast/chennai/' 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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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/forecast/chennai/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; 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a:hover { text-decoration: none; }</style><i style='color:#888;font-size:13px;word-break: break-all;'>Share: <a href='https://aqicn.org/forecast/chennai/'>aqicn.org/forecast/chennai/</a></i><br></center> <div class='h2-title forecast-title'>Other Cities</div> <div style='font-size:80%;color:#444;line-height:2;text-align: center;'> <div id="gtrans-div-id" style="float:right" class="gtrans-div"></div><script>try { googleTranslate(); } catch (e) {}</script> <link rel='stylesheet' href='https://aqicn.org/images-static//isprites/map-flags/2015-10-05/ispritflags.css' /> <p> The detailed forecast analysis is also available for other cities: </p> <div id='city-forecast-search'></div> <p> Or just select any of those cities: </p> <a href='/forecast/beijing/'>Beijing</a>, <a href='/forecast/shanghai/'>Shanghai</a>, <a href='/forecast/chengdu/'>Chengdu</a>, <a href='/forecast/shenyang/'>Shenyang</a>, <a href='/forecast/shenzhen/'>Shenzhen</a>, <a href='/forecast/guangzhou/'>Guangzhou</a>, <a href='/forecast/qingdao/'>Qingdao</a>, <a href='/forecast/xian/'>Xian</a>, <a href='/forecast/tianjin/'>Tianjin</a>, <a href='/forecast/saitama/'>Saitama</a>, <a href='/forecast/kyoto/'>Kyoto</a>, <a href='/forecast/osaka/'>Osaka</a>, <a href='/forecast/seoul/'>Seoul</a>, <a href='/forecast/busan/'>Busan</a>, <a href='/forecast/bogota/'>Bogota</a>, <a href='/forecast/delhi/'>Delhi</a>, <a href='/forecast/jakarta/'>Jakarta</a>, <a href='/forecast/ulaanbaatar/'>Ulaanbaatar</a>, <a href='/forecast/hanoi/'>Hanoi</a>, <a href='/forecast/kolkata/'>Kolkata</a>, <a href='/forecast/mumbai/'>Mumbai</a>, <a href='/forecast/hyderabad/'>Hyderabad</a>, <a href='/forecast/santiago/'>Santiago</a>, <a href='/forecast/lima/'>Lima</a>, <a href='/forecast/saopaulo/'>Saopaulo</a>, <a href='/forecast/quito/'>Quito</a>, <a href='/forecast/singapore/'>Singapore</a>, <a href='/forecast/kuala-lumpur/'>Kuala-lumpur</a>, <a href='/forecast/ipoh/'>Ipoh</a>, <a href='/forecast/perai/'>Perai</a>, <a href='/forecast/miri/'>Miri</a>, <a href='/forecast/newyork/'>New York</a>, <a href='/forecast/seattle/'>Seattle</a>, <a href='/forecast/chicago/'>Chicago</a>, <a href='/forecast/boston/'>Boston</a>, <a href='/forecast/atlanta/'>Atlanta</a> <p> For other cities, countries or pollutants, please refer to world air quality forecast maps: </p> <a href='https://waqi.info/forecast/'>https://waqi.info/forecast/</a> </div> <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> </div></div></div> <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;;'>Forecast Map</div></h1></div><script type='text/javascript'> ; if 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<path d="M47.988,28.741L36.012,20.86C33.256,19.047,31,20.263,31,23.563v2.555l-7.988-5.257C20.256,19.047,18,20.263,18,23.563 v16.875c0,3.3,2.259,4.521,5.021,2.714L31,37.93v2.508c0,3.3,2.259,4.521,5.021,2.714l11.959-7.826 C50.741,33.518,50.744,30.555,47.988,28.741z M45.858,33.128l-10.185,6.665C34.753,40.396,34,39.988,34,38.889v-4.508 c0-1.1-0.753-1.507-1.674-0.905l-9.652,6.318C21.753,40.396,21,39.988,21,38.889V25.128c0-1.1,0.752-1.505,1.671-0.9l9.658,6.354 c0.919,0.604,1.671,0.199,1.671-0.9v-4.554c0-1.1,0.752-1.505,1.671-0.9l10.19,6.705C46.78,31.537,46.779,32.525,45.858,33.128z"/> </svg> </div> </div> <div id='worldmap'></div> </div> <center id='updatedontxt' style='display:none'> Last updated on <span id='updateondate'>???</span></center> <div id='city-forecast'> <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;padding:5px 0;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;;'><div id='xxx'>City Forecast</div></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><div id='forecast-cityinfo'></div></center></div></div></div></div> <script> function bclk(e,b) { e.stopPropagation(); if (b=="pause") { forecast.pause(); d3.select("#PLAY").attr("display",""); d3.select("#PAUSE").attr("display","none"); d3.select("#BACKWARD").attr("visibility","visible"); d3.select("#FORWARD").attr("visibility","visible"); } if (b=="play") { forecast.play(); d3.select("#PLAY").attr("display","none"); d3.select("#PAUSE").attr("display",""); d3.select("#FORWARD").attr("visibility","hidden"); d3.select("#BACKWARD").attr("visibility","hidden"); } if (b=="back") { forecast.pause(); forecast.back(); d3.select("#PLAY").attr("display",""); d3.select("#PAUSE").attr("display","none"); } if (b=="forward") { forecast.pause(); forecast.forward(); d3.select("#PLAY").attr("display",""); d3.select("#PAUSE").attr("display","none"); } return false; } try { d3.select("#BACKWARD").attr("visibility","hidden"); d3.select("#FORWARD").attr("visibility","hidden"); } catch(e) {} aqi18n.register("CITY_AQIFORECAST_TITLE","__CITY__ Air Quality Forecast"); </script></div></div></div> <div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header4' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>Model Comparison</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header4',.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' > <p> This section is experimental. It provides the comparison for the prediction for several individual forecast models </p> <div id='multi-model-div'> <center> <div class="aqspinner3"><div class="r1"></div><div class="r2"></div><div class="r3"></div><div class="r4"></div><div class="r5"></div></div> </center> </div> <p> For a full list of all Air Quality Forecast models being analyser, check the forecast models page: <a href='/forecast/models/'>https://aqicn.org/forecast/models/</a> </p> </div></div></div> <div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header5' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>Forecast Analysis</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header5',.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' > <p> How accurate are the forecasts? </p> <p> Check the correlation graphs below for PM<sub>2.5</sub>, PM<sub>10</sub> and Ozone for the past 30 days. </p> <p> (Note that all values are based on the AQI, and that a maximum threshold of AQI 300 is used). </p> <div id='analytics1'> <center> <div class="aqspinner3"><div class="r1"></div><div class="r2"></div><div class="r3"></div><div class="r4"></div><div class="r5"></div></div> </center> </div> <br> <center> <small>Past month PM<sub>2.5</sub> AQI short-term forecast analysis.</small> </center> <br> <p> In the above graph, the forecast is data is the forecast one day in advance (i.e. the forecast computed today for tomorrow). </p> <div id='graph-width'></div> </div></div></div> <script src='/air/view/forecast/scripts/dist/forecast-page.js?_=20210216.164922&type=script'></script><script src='/air/view/forecast/scripts/dist/forecast-analysis.js?_=20210216.164922&type=script'></script> <script> var names={"o3":"ozone","o3.abbr":"O<sub>3<\/sub>","pm25":"fine particulate matter","pm25.abbr":"PM<sub>2.5<\/sub>","pm10":"respirable particulate matter","pm10.abbr":"PM<sub>10<\/sub>","uvi":"Ultra Violet Index","uvi.abbr":"UVI","wind":"Wind","wind.abbr":"W","hour":"hour","humidity":"humidity","temperature":"Temp.","wind-legend":"Wind Speed <small>(m\/s)<\/small>"};for (var k in names) aqi18n.register(k,names[k]);</script> <script> moment.locale('en');var feed = {"timestamp":1732571110,"city":{"name":"Chennai US Consulate","url":"https:\/\/aqicn.org\/city\/chennai\/\/us-consulate\/","idx":7023,"id":"Chennai\/\/USConsulate","geo":["13.087840080261","80.278472900391"],"key":"_c85IzctLzNTXDw12zs8rLs1JLEkFAA"},"iaqi":[{"p":"pm25","v":[76,76,173],"i":"Chennai US Consulate, Chennai pm25 (fine particulate matter) measured by U.S. Embassy and Consulates Air Quality Monitor in India. 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Area, Kolar, India","utime":" on Tuesday, Nov 26th 2024, 06:00 am","extra":1},{"x":11316,"g":[13.428828,77.731418],"t":"2024-11-26T03:00:00+05:30","aqi":"158","name":"Chikkaballapur Rural, Chikkaballapur, India","utime":" on Tuesday, Nov 26th 2024, 06:00 am","extra":1},{"x":11293,"g":[12.917348,77.622813],"t":"2024-11-26T03:00:00+05:30","aqi":"153","name":"Silk Board, Bengaluru, India","utime":" on Tuesday, Nov 26th 2024, 06:00 am","extra":1},{"x":8190,"g":[12.9135218,77.5950804],"t":"2024-11-26T03:00:00+05:30","aqi":"74","name":"BTM, Bangalore, India","utime":" on Tuesday, Nov 26th 2024, 06:00 am","extra":1},{"x":11270,"g":[12.938539,77.5901],"t":"2024-11-26T03:00:00+05:30","aqi":"75","name":"Hombegowda Nagar, Bengaluru, India","utime":" on Tuesday, Nov 26th 2024, 06:00 am","extra":1}]};var curl = "chennai";forecastAnalyser.init(7023,curl,feed);</script><div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header6' style='padding:2px;padding:5px 0;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;;'>Air Quality Forecasts Models</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header6',.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> <p> There are many forecast models, for different regions of the globe - below are few of them. </p> <p> Just click on any of them to see the animated map for the given model. </p> <div class='forecast-models'> <div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/world/'>World</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/asia/'>Asia</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/europe/'>Europe</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/south-america/'>South America</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/north-america/'>North America</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/oceania/'>Oceania</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/africa/'>Africa</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/middle-east/'>Middle East</a></span></div><div class='forecast-region'><span class='single'><a href='https://aqicn.org/forecast/china/'>China</a></span></div></div> <p> For a full list of all Air Quality Forecast models being analyser, check the forecast models page: <a href='/forecast/models/'>https://aqicn.org/forecast/models/</a> </p> <br> <br> <small> <p> Please note that all above analysis are done on the World Air Quality Index (WAQI) project own budget. </p> <p> We did not receive any subsidies from any of the intuitions publishing Air Quality forecast models. </p> </small> </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> <br> </div></div></div><div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header7' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>Future Improvements</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { 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forecast <a style='color:teal' href='/forecast/'>model inventory</a> up-to-date. </p> <li>Do you know any model not listed below but for which gridded data is available? </li> <li>Do you know better accuracy analysis solutions which should be used here? </li> <li>Have you done a similar research and you would like to publish it here? </li> <p> If yes, drop us a message from the <a href='/contribute/'>contribute page</a> and we will contact you asap! </p></div></div></div> <div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header8' style='padding:2px;padding:5px 0;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;;'>Forecast Model Sources</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header8',.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' ><p> The above prediction is based on composite meta model, computed using several Air Quality Forecasting Systems (AQFS): </p> <ul> <li> The <a href='http://sprintars.riam.kyushu-u.ac.jp/indexe.html'> <i>Spectral Radiation-Transport Model for Aerosol Species</i></a> (Sprintars) model from Kyushu University. <li> The <a href='http://m.zq12369.com/forecast.php'><i>China National Air Quality forecast</i></a> by Zhejiang Experts in Experimental Sciences (PM2.5科学实验专家小组). <li> The <a href='http://www.airkorea.or.kr/dustForecast'><i>Air Korea Air Quality forecast</i></a>, by the Korean Integrated Air Quality forecast center(대기질 통합예보센터)</a>. <li> The <a href='http://copernicus-atmosphere.eu'>Copernicus Atmosphere Monitoring Service</a> (CAMS) near-realtime surface ensemble forecast , by the ECMWF. <li> The <a href='http://silam.fmi.fi/'> System for Integrated modeLling of Atmospheric coMposition</a> (SILAM) by the Finnish Meteorological Institute (FMI). <li> The <a href='http://www.mpimet.mpg.de/en/mpimet-homepage/'>Max Planck Institut fur Meteorologie</a> (MPIM) model. <li> The <a href='http://airquality.weather.gov/'> Ozone Air Quality Model</a> (AQM) by the NOAA/NCEP. <li> The <a href='https://weather.gc.ca/aqfm/index_e.html'> <i>Regional Air Quality Deterministic Prediction System </i></a> (RAQDPS) model from the Government of Canada. <li> The <a href='http://www.irceline.be/en/air-quality/forecasts'>irCELine</a> (<i>Belgian Interregional Environment Agency</i>) for the Belgian Regions. <li> The <a href='http://www.lcsqa.org/surveillance/indices/cartographie'>LCSQA</a> <i> (Laboratoire Central de Surveillance de la Qualité de l’Air)</i> for France. <Li> The <a href='http://www.lml.rivm.nl/verwachting/animatie.html'>RIVM</a> <i> (Rijksinstituut voor Volksgezondheid en Milieu)</i> for the Netherlands. <li> The <a href='http://silam.fmi.fi/aqforecast.html?parameter=PM25&region=Northern%20Europe&height=0'>SILAM</a> <i> (System for Integrated modeLling of Atmospheric coMposition)</i> for Northen Europe. <li> The <a href='http://db.eurad.uni-koeln.de/index_e.html?/prognose/cger_e.html'>EURAD</a> <i> (EURopean Air Pollution Dispersion)</i> for Central Europe. </ul> <p> The above map is based on the PM<sub>2.5</sub> surface level modeling, and colors are following the <a href='/faq/2013-09-09/revised-pm25-aqi-breakpoints/'>US EPA AQI standard</a>. </p></div></div></div> <div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header9' style='padding:2px;padding:5px 0;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;;'>Disclaimer</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header9',.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' > <p> This forecasting model, and all AQFS which it is based on, are research products intended to provide information related to Air Quality forecast. All reasonable measures have been taken to ensure its quality and accuracy. However: </p> <ul style='color:#888'> <li>We do not make warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, correctness, completeness of the information.</li> <li>We do not assume any legal liability or responsibility for any damage or loss that may directly or indirectly result from any information contained on this website or any actions taken as a result of the content of this website;</li> <li>We may change, delete, add to, or otherwise amend information contained on this website without notice</li> </ul> <p> For more information about the underlying concepts of Air Quality forecasting (or Atmospheric Dispersion Modeling), check the article on <a href='/faq/2015-11-05/a-visual-study-of-wind-impact-on-pm25-concentration/'> a visual study of wind impact of PM<sub>2.5</sub> concentration</a>. </p> </div></div></div><a name="infoaqi"></a><div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header10' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>About the Air Quality and Pollution Measurement:</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header10',.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>About the Air Quality Levels<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 cautionary"> <thead> <tr> <td>AQI</td> <td>Air Pollution Level</td> <td>Health Implications</td> <td>Cautionary Statement (for PM2.5)</td> </tr> </thead> <tr style="background-color:#009966;"> <td class='aqiwtxt' nowrap="true">0 - 50</td> <td class='aqiwtxt'>Good</td> <td class='aqiwtxt'>Air quality is considered satisfactory, and air pollution poses little or no risk</td> <td class='aqiwtxt'>None</td> </tr> <tr style="background-color:#ffde33" class='aqibtxt'> <td class='aqibtxt' nowrap="true">51 -100</td> <td class='aqibtxt'>Moderate</td> <td class='aqibtxt'>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.</td> <td class='aqibtxt'>Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.</td> </tr> <tr style="background-color:#ff9933;"> <td class='aqibtxt' nowrap="true">101-150</td> <td class='aqibtxt'>Unhealthy for Sensitive Groups</td> <td class='aqibtxt'>Members of sensitive groups may experience health effects. The general public is not likely to be affected.</td> <td class='aqibtxt'>Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.</td> </tr> <tr style="background-color:#cc0033;"> <td class='aqiwtxt' nowrap="true">151-200</td> <td class='aqiwtxt'>Unhealthy</td> <td class='aqiwtxt'>Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects</td> <td class='aqiwtxt'>Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion</td> </tr> <tr style="background-color:#660099;"> <td class='aqiwtxt' nowrap="true">201-300</td> <td class='aqiwtxt'>Very Unhealthy</td> <td class='aqiwtxt'>Health warnings of emergency conditions. The entire population is more likely to be affected.</td> <td class='aqiwtxt'>Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.</td> </tr> <tr style="background-color:#7e0023;"> <td class='aqiwtxt' nowrap="true">300+</td> <td class='aqiwtxt'>Hazardous</td> <td class='aqiwtxt'>Health alert: everyone may experience more serious health effects</td> <td class='aqiwtxt'>Everyone should avoid all outdoor exertion</td> </tr> </table></div><br>To know more about Air Quality and Pollution, check the <a href='http://en.wikipedia.org/wiki/Air_quality'>wikipedia Air Quality topic</a> or the <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>airnow guide to Air Quality and Your Health</a>.<br><br>For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check <a href='http://www.myhealthbeijing.com/'>www.myhealthbeijing.com</a> blog.<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>Usage Notice</b>: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. 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Hungarian</option><option value='https://aqicn.org/forecast/chennai/el/' >Ελληνικά - Greek</option><option value='https://aqicn.org/forecast/chennai/ro/' >Română - Romanian</option><option value='https://aqicn.org/forecast/chennai/bg/' >български - Bulgarian</option><option value='https://aqicn.org/forecast/chennai/ur/' >اردو - Urdu</option><option value='https://aqicn.org/forecast/chennai/hi/' >हिंदी - Hindi</option><option value='https://aqicn.org/forecast/chennai/ar/' >العربية - Arabic</option><option value='https://aqicn.org/forecast/chennai/sr/' >Српски - Serbian</option><option value='https://aqicn.org/forecast/chennai/bn/' >বাংলা - Bangla</option><option value='https://aqicn.org/forecast/chennai/bs/' >босански - Bosnian</option><option value='https://aqicn.org/forecast/chennai/hr/' >hrvatski - Croatian</option><option value='https://aqicn.org/forecast/chennai/tr/' >Türkçe - Turkish</option><option value='https://aqicn.org/forecast/chennai/uk/' >українська - Ukrainian</option><option value='https://aqicn.org/forecast/chennai/cs/' >čeština - Czech</option><option value='https://aqicn.org/forecast/chennai/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 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$("#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) { 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