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id='hdrlang'><div class='hdrlang-flags'><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/'><div title='English' class='sprite-isprt-web-gb flag-en'></div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//cn'><div title='Chinese' class='sprite-isprt-web-cn flag-zh-CN'></div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//jp'><div title='Japanese' class='sprite-isprt-web-jp flag-ja'></div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//es'><div title='Spanish' class='sprite-isprt-web-es flag-es'></div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//kr'><div title='Korean' class='sprite-isprt-web-kr flag-ko'></div></a><a 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title='Portuguese' class='sprite-isprt-web-br flag-pt'></div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//vn'><div title='Vietnamese' class='sprite-isprt-web-vn flag-vi'></div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//it'><div title='Italian' class='sprite-isprt-web-it flag-it'>🇮🇹</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//id'><div title='Indonesian' class='sprite-isprt-web-id flag-id'>🇮🇩</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//nl'><div title='Dutch' class='sprite-isprt-web-nl flag-nl'>🇳🇱</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//fa'><div title='Persian' class='sprite-isprt-web-ir flag-fa'>🇮🇷</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//th'><div title='Thai' class='sprite-isprt-web-th flag-th'>🇹🇭</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hu'><div title='Hungarian' class='sprite-isprt-web-hu flag-hu'>🇭🇺</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//el'><div title='Greek' class='sprite-isprt-web-gr flag-el'>🇬🇷</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ro'><div title='Romanian' class='sprite-isprt-web-ro flag-ro'>🇷🇴</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//bg'><div title='Bulgarian' class='sprite-isprt-web-bg flag-bg'>🇧🇬</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ur'><div title='Urdu' class='sprite-isprt-web-pk flag-ur'>🇵🇰</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hi'><div title='Hindi' class='sprite-isprt-web-in flag-hi'>🇮🇳</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ar'><div title='Arabic' class='sprite-isprt-web-ae flag-ar'>🇦🇪</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//sr'><div title='Serbian' class='sprite-isprt-web-rs flag-sr'>🇷🇸</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//bn'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//bs'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hr'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//tr'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//uk'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//cs'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//be'><div title='Belarusian' class='sprite-isprt-web-by flag-be'>🇧🇾</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//km'><div title='Khmer' class='sprite-isprt-web-kh flag-km'>🇰🇭</div></a><a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/' 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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//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/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//lo' class='lang-lo'><div class='item'><div class='flag 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class='section-outer'><div class='section-content' ><i>Posted on September 6<sup>th</sup> 2014</i><div style='height:1px;background-color:#aaaaaa;width:300px;margin-top:5px;'></div><small><i>(re-edited on January 1<sup>st</sup> 2020)</i></small><br><div id="gtrans-div-id" style="float:right" class="gtrans-div"></div><script>try { googleTranslate(); } catch (e) {}</script><div class='ui-share-btns'><a id='share-facebook' href='https://www.facebook.com/dialog/share?app_id=643196515742584&display=popup&href=https%3A%2F%2Faqicn.org%2Ffaq%2F2014-09-06%2Faustralian-air-quality-comparison-with-the-us-epa-aqi-scale%2Fcs%2F&redirect_uri=https%3A%2F%2Faqicn.org%2Ffaq%2F2014-09-06%2Faustralian-air-quality-comparison-with-the-us-epa-aqi-scale%2Fcs%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 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scale.<br>(https:\/\/aqicn.org\/faq\/2014-09-06\/australian-air-quality-comparison-with-the-us-epa-aqi-scale\/cs\/)"});}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;'>Podíl: <a href='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/cs/'>aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/cs/</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 src='/air/view/experiments/images/aqi.png' width=200> </div> <p> The Air Quality data for <a href='/city/perth/cs/'>Perth</a> and <a href='/map/westernaustralia/cs/'>Western Australia</a> is finally available after a long waiting time. </p> <p> The department of Environmental Regulation (D.E.R.) from the government of Western Australia, is now publishing the data on their site: <a href='http://www.der.wa.gov.au/your-environment/air'>der.wa.gov.au/your-environment/air</a>. </p> <p> While the link to the <a href='http://www.dec.wa.gov.au/pollution-prevention/air-quality/air-quality-data.html'>DEC site</a> is still not working, the feed can be accessed from this new <a href='http://www.der.wa.gov.au/component/newsfeeds/newsfeed/53-air-quality/1-air-quality-data?Itemid=101'> page</a>. </p> <br><br> <p> However, unlike the other territories in Australia, WA DER is not providing the readings in raw ppm and µg/m<sup>3</sup>, but directly in AQI. The AQI scale used by the WA DER is not the same as the one from the <a href='/faq/2013-09-09/revised-pm25-aqi-breakpoints/'>US EPA</a>, which we are using for all the stations reported on the World Air Quality Index project. So this aim of the FAQ entry is to explain how the convertion between the two AQI scales is done. </p> <center><br>oOo<br><br></center> <p> The WA DER AQI scale is based on the "<i>National Environment Protection (Ambient Air Quality) Measure standards and goals</i>" (available form this <a href='http://www.dec.wa.gov.au/pollution-prevention/air-quality/air-quality-data/air-quality-index.html'>link</a> and this other <a href='http://www.environment.gov.au/topics/environment-protection/air-quality/air-quality-standards'>link</a>), which is defined in the table below. Based on this standard, it is possible to deduct the raw readings from the AQI, which is indicated by the last column in the table; </p> <center> <table class='fancy' style=''> <tr style='background-color:#ccc'> <th>Pollutant <th>Averaging period <th>Maximum concentration <th>Raw data convertion formula <tr> <td>Fine Particles (PM<sub>2.5</sub>) <td>1 day <td>25µg/m3 <td>Mass = AQI*25/100 (µg/m<sup>3</sup>) <tr> <td>Respirable Particles (PM<sub>10</sub>) <td>1 day <td>50µg/m3 <td>Mass = AQI*50/100 (µg/m<sup>3</sup>) <tr> <td>Carbon monoxide (CO) <td>8 hours <td>9.0ppm <td>Count = AQI*9.0/100 (ppm) <tr> <td rowspan=2>Nitrogen dioxide (NO<sub>2</sub>) <td>1 hour <td>0.12ppm <td rowspan=2>Count = AQI*0.12/100 (ppm) <tr> <td>1 year <td>0.03ppm <tr> <td rowspan=3>Sulfur dioxide (SO<sub>2</sub>) <td>1 hour <td>0.20ppm <td rowspan=3>Count = AQI*0.20/100 (ppm) <tr> <td>1 day <td>0.08ppm <tr> <td>1 year <td>0.02ppm <tr> <td rowspan=2>Photochemical oxidants<br>(Ozone, O<sub>3</sub>) <td>1 hour <td>0.10ppm <td rowspan=2>Count = AQI*0.10/100 (ppm) <tr> <td>4 hours <td>0.08ppm <tr> <td>Lead <td>1 year <td>0.50µg/m3 <td> n/a </table> </center> <br> <p> Actually, surprisingly enough, the WA DER AQI scale is much more strict than the US EPA when the AQI is above 50! Check for this comparitive tables for PM<sub>2.5</sub>: </p> <center><table class='aqicomptable' width=80%><tr><td>Particule<br>mass</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>10</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>20</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>30</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>40</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>50</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>60</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>70</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>80</td><td colspan=50 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=50 style='text-align:right;font-size:10px;width:5%;'>90</td></tr><tr><td></td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td></tr><tr><td>WA DER<br>Standard:</td><td colspan=125 style='background:#009966;color:#ffffff;text-align:center;'><i>0..50</i></td><td colspan=125 style='background:#ffde33;color:#000000;text-align:center;'><i>50..100</i></td><td colspan=125 style='background:#ff9933;color:#000000;text-align:center;'><i>100..150</i></td><td colspan=125 style='background:#cc0033;color:#ffffff;text-align:center;'><i>150..200</i></td><td colspan=250 style='background:#660099;color:#ffffff;text-align:center;'><i>200..300</i></td><td colspan=750 style='background:#7e0023;color:#ffffff;text-align:center;'><i>300.....</i></td></tr><tr><td></td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td><td colspan=100 style='border-right:1px dashed black;'> </td></tr><tr><td>US EPA<br>Standard:</td><td colspan=120 style='background:#009966;color:#ffffff;text-align:center;'><i>0..50</i></td><td colspan=234 style='background:#ffde33;color:#000000;text-align:center;'><i>50..100</i></td><td colspan=200 style='background:#ff9933;color:#000000;text-align:center;'><i>100..150</i></td><td colspan=446 style='background:#cc0033;color:#ffffff;text-align:center;'><i>150..200</i></td></tr></table></center> <p> And this comparison is for the PM<sub>10</sub>: </p> <center><table class='aqicomptable' width=80%><tr><td>Particule<br>mass</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>20</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>40</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>60</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>80</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>100</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>120</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>140</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>160</td><td colspan=100 style='text-align:left;font-size:10px;width:5%;'> µg/m<sup>3</sup></td><td colspan=100 style='text-align:right;font-size:10px;width:5%;'>180</td></tr><tr><td></td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td></tr><tr><td>WA DER<br>Standard:</td><td colspan=250 style='background:#009966;color:#ffffff;text-align:center;'><i>0..50</i></td><td colspan=250 style='background:#ffde33;color:#000000;text-align:center;'><i>50..100</i></td><td colspan=250 style='background:#ff9933;color:#000000;text-align:center;'><i>100..150</i></td><td colspan=250 style='background:#cc0033;color:#ffffff;text-align:center;'><i>150..200</i></td><td colspan=500 style='background:#660099;color:#ffffff;text-align:center;'><i>200..300</i></td><td colspan=500 style='background:#7e0023;color:#ffffff;text-align:center;'><i>300.....</i></td></tr><tr><td></td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td><td colspan=200 style='border-right:1px dashed black;'> </td></tr><tr><td>US EPA<br>Standard:</td><td colspan=550 style='background:#009966;color:#ffffff;text-align:center;'><i>0..50</i></td><td colspan=1000 style='background:#ffde33;color:#000000;text-align:center;'><i>50..100</i></td><td colspan=1000 style='background:#ff9933;color:#000000;text-align:center;'><i>100..150</i></td></tr></table></center> <p> For now, we will keep the using the US EPA standard, simply because it is the one we use for the overall Australia. </p> <p> We will also post an update later, once enough data has been gathered to do more comparison of those 2 scales. We currently assume that the Air Quality in Western Australia is not just the same as in China, where AQI above 200 is common, and that AQI below 50 should be the norm, in which case the PM2.5 reported AQI should be similar for both scales (assuming that PM2.5 is the major pollutant). </p> <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>: This article is part of a series on Worldwide Air Quality scales. <br> <br> For more information about specific countries or continent, please refer to those articles: <a href='/faq/2015-05-02/south-asian-air-quality-scales-malaysia-and-thailand/cs/'> <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> Thailand and Malysia </a> - <a href='/faq/2015-05-15/india-national-air-quality-index/cs/'> <div class='flag flag-icon-background flag-icon-in' style='width:22px;height:12px;display:inline-block;'></div> India </a> - <a href='/faq/2015-03-20/a-comparison-of-worldwide-air-quality-scales-part-1/cs/'> <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/cs/'> <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> Hong Kong / Canada (Air Quality Health Index) </a> - <a href='/faq/2015-05-30/air-quality-forecast-in-south-america/cs/'> <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> South America </a> - <a href='/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale/cs/'> <div class='flag flag-icon-background flag-icon-au' style='width:22px;height:12px;display:inline-block;'></div> Australia </a> - <a href='/faq/2015-07-16/air-quality-scale-in-quebec-and-montreal/cs/'> <div class='flag flag-icon-background flag-icon-ca' style='width:22px;height:12px;display:inline-block;'></div> Quebec and Montreal </a> - <a href='/faq/2013-06-25/singapore-psi-and-pm25-aqi-why-is-there-a-difference-between-the-two-readings/cs/'> <div class='flag flag-icon-background flag-icon-sg' style='width:22px;height:12px;display:inline-block;'></div> Singapore </a> - <a href='/faq/2015-09-03/air-quality-scale-in-poland/cs/'> <div class='flag flag-icon-background flag-icon-pl' style='width:22px;height:12px;display:inline-block;'></div> Poland </a> - <a href='/faq/2015-07-18/real-time-air-quality-monitoring-in-indonesia/cs/'> <div class='flag flag-icon-background flag-icon-id' style='width:22px;height:12px;display:inline-block;'></div> Indonesia </a>. <p> For information about the 24 hours averaging used or Ozone and Particulate Matter (PM<sub>2.5</sub>), please refer to those two articles: <a href='/faq/2015-05-18/ground-ozone-air-quality-index-update-with-instant-cast/cs/'>Ground Ozone Index</a> - <a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/cs/'>PM<sub>2.5</sub> Instant Cast</a> </p> </div> </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>Víte o nějakých stanicích kvality ovzduší ve vašem okolí?</span> <span>proč se nezapojit do mapy s vlastní stanicí kvality ovzduší?</span></div><img src='/air/view/gaia/images/gaia-series-a12-icon-with-map.png'><a href='/gaia/list/cs/' target=gaia_a08><span>Více se dozvíte na</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/cs/');}}}).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>var i18nTexts=(i18nTexts||[]);i18nTexts.push({"wa.KqlOlZrllRNJ+7u88XlbL2RQFwo=":"Jejda. 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Obecná veřejnost pravděpodobně nebude zasažena.</td></tr><tr style="background-color:#cc0033;"><td class='aqiwtxt' nowrap="true">151-200</td><td class='aqiwtxt'>Nezdravý</td><td class='aqiwtxt'>Každý může začít projevovat účinky na zdraví. členové citlivých skupin mohou mít vážnější účinky na zdraví</td></tr><tr style="background-color:#660099;"><td class='aqiwtxt' nowrap="true">201-300</td><td class='aqiwtxt'>Velmi Nezdravé</td><td class='aqiwtxt'>Zdravotní varování při havarijních podmínkách. Celá populace je pravděpodobněji postižena.</td></tr><tr style="background-color:#7e0023;"><td class='aqiwtxt' nowrap="true">300+</td><td class='aqiwtxt'>Nebezpečný</td><td class='aqiwtxt'>Zdravotní upozornění: každý může mít vážnější zdravotní účinky</td></tr></table></div><br>Chcete-li se dozvědět více o kvalitě ovzduší a znečištění, podívejte se na <a href='http://en.wikipedia.org/wiki/Air_quality'>téma Kvalita ovzduší na wikipedii</a> nebo <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>na airnow průvodce Kvalita ovzduší a vaše zdraví</a> .<br><br>Velmi užitečné zdravotní rady pekingského lékaře Richarda Saint Cyr MD najdete na blogu <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>Upozornění na použití</b>: Veškeré údaje o kvalitě ovzduší jsou v době zveřejnění neplatné a vzhledem k zajištění kvality mohou být tyto údaje kdykoli změněny bez upozornění. 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projektu</h3><br><li><a href='/contact/cs/'>Kontaktujte projektový tým World Air Quality Index</a></li><li><a href='/media/cs/'>Sada pro tisk a média</a></li><br><h3><a href='/research/cs/'>výzkum kvality ovzduší</a></h3><br><li><a href='/faq/cs/'>Znalostní báze a články o kvalitě ovzduší</a></li><li><a href='/research/cs/'>Experimentování s kvalitou vzduchu</a></li><li><a href='/sensor/cs/'>Analýza senzorů kvality vzduchu</a></li><br><h3><a href='/faq/cs/'>Často kladené otázky</a></h3><br><li><a href='/sources/cs/'>Zdroj dat o kvalitě ovzduší</a></li><li><a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/cs/'>Výpočet indexu kvality ovzduší</a></li><li><a href='/forecast/cs/'>Předpověď kvality ovzduší</a></li><li><a href='/products/cs/'>Výrobky pro kvalitu ovzduší (masky, monitory…)</a></li><li><a href='/api/cs/'>API (Application Programming Interface)</a></li><li><a href='/data-platform/cs/'>Historická datová platforma</a></li></div><div class='footercolumn2 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Chinese</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//jp' >日本 - Japanese</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//es' >español - Spanish</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//kr' >한국의 - Korean</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ru' >русский - Russian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hk' >繁體中文 - Traditional Chinese</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//fr' >Francais - French</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//pl' >Polski - Polish</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//de' >Deutsch - German</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//pt' >Português - Portuguese</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//vn' >Tiếng Việt - Vietnamese</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//it' >Italiano - Italian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//id' >bahasa Indonesia - Indonesian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//nl' >Nederlands - Dutch</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//fa' >فارسی - Persian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//th' >ภาษาไทย - Thai</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hu' >Magyar - Hungarian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//el' >Ελληνικά - Greek</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ro' >Română - Romanian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//bg' >български - Bulgarian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ur' >اردو - Urdu</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hi' >हिंदी - Hindi</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//ar' >العربية - Arabic</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//sr' >Српски - Serbian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//bn' >বাংলা - Bangla</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//bs' >босански - Bosnian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//hr' >hrvatski - Croatian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//tr' >Türkçe - Turkish</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//uk' >українська - Ukrainian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//cs' selected>čeština - Czech</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//be' >беларускі - Belarusian</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//km' >ខ្មែរ - Khmer</option><option value='https://aqicn.org/faq/2014-09-06/australian-air-quality-comparison-with-the-us-epa-aqi-scale//lo' >ລາວ - Lao</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><link rel='stylesheet' type='text/css' href='https://aqicn.org/air-cache/generic/scripts/dist/navmenu.css?_=20250118.191236' /><script async src='https://aqicn.org/air-cache/generic/scripts/dist/navmenu.js?_=20250121.194619' type='text/javascript'></script><script type="text/javascript"> fitLine(".link",.9); </script><script src='https://aqicn.org/air-cache/jquery-3.7.1.min.js?_=20250116.195014' type='text/javascript'></script><script type="text/javascript">function initTime(){if (isMobileUA) return;function setTimeText(){var minutes = new Date().getMinutes();var hours = new Date().getHours();var time = ( hours < 10 ? 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