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title='Bulgarian' class='sprite-isprt-web-bg flag-bg'>🇧🇬</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//ur'><div title='Urdu' class='sprite-isprt-web-pk flag-ur'>🇵🇰</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//hi'><div title='Hindi' class='sprite-isprt-web-in flag-hi'>🇮🇳</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//ar'><div title='Arabic' class='sprite-isprt-web-ae flag-ar'>🇦🇪</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//sr'><div title='Serbian' class='sprite-isprt-web-rs flag-sr'>🇷🇸</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//bn'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//bs'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//hr'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//tr'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//uk'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//cs'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints//be'><div title='Belarusian' class='sprite-isprt-web-by flag-be'>🇧🇾</div></a></div><div id='hdrlang-navigation'><div id='hdrlang-navigation-inner' class='hdrlang-navigation'><a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/' 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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//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/2013-09-09/revised-pm25-aqi-breakpoints//be' class='lang-be'><div class='item'><div class='flag sprite-isprt-web-by'>🇧🇾</div><span class='name'>Belarusian <span>- беларускі</span></span></div></a></div></div></div><div class="hdrshare"><script type="text/javascript"> function initSharing(){aqisrv.here().then(function(where){country = where.Country.IsoCode;if (country!='CN') {loadScriptAsync("https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v5.0&appId=643196515742584&autoLogAppEvents=1")}}).catch(function(e){console.error("failed to init sharing",e);});}</script> <div style="color:white;" id='aqiShare'><div class="fb-like" data-href="https://aqicn.org/here/" data-width="" data-layout="button_count" data-action="like" data-size="small" data-lazy="true" data-colorscheme="dark" data-share="true"></div></div></div><style type="text/css">/* SEARCH AND MORE */.hsearch {position: absolute;width:245px;height:32px;display: block;margin-top:0px;margin-bottom:7px;overflow:hidden;z-index:100;right:54px;}.hsearch #hsearch-btn {width:25px;height:25px;float:left;}.hsearch-inner {width:245px;}.hsearch .bottom, .hsearch .left, .hsearch .right {position: 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Linotype","Book Antiqua","URW Palladio L",serif;;;'>نقاط شکست PM2.5 AQI اصلاح شده</div><div id='h1header2' class='h1sub' >Revised PM2.5 AQI breakpoints</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header1',.88,{maxfs:45});fitLine('#h1header2',.88,{maxfs:38}); }; </script><style>.section-outer {text-align: initial;}.section-content {max-width: 95%;width: 1100px;font-size: 18px;min-height: 300px;text-align: initial;margin-top: 10px;margin-bottom: 10px;line-height: 1.8;margin-left: auto;margin-right: auto;}.section-content-tight {min-height: 0px;}.section-content-alt {background-color: #f0f0f0;border-top: 1px solid #ccc;border-bottom: 1px solid #ddd};.section-banner {background-size: 100%;background: url(https://aqicn.org/images//bluesky-banner-panoramic.jpg) no-repeat center bottom #eee;margin-top: -2px;z-index: -1;border-bottom: 1px solid #888;width: 100%;}.h2-title {font-family: inherit;font-size: 1.1em;overflow: hidden;text-align: center;text-transform: capitalize;}.h2-title:before,.h2-title:after {background-color: #ddd;content: '';display: inline-block;height: 1px;position: relative;vertical-align: middle;width: 50%;}.h2-title:before {right: 0.5em;margin-left: -50%;}.h2-title:after {left: 0.5em;margin-right: -50%;}@media only screen and (max-width: 800px) {.section-content {line-height: 1.6;max-width: 98%;min-height: 10px;}.section-banner {display: none;}}</style><div class='whitebody' style='font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;'><div class='section-outer'><div class='section-content' ><i>Posted on September 9<sup>th</sup> 2013</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' 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{text-decoration: none;}</style><i style='color:#888;font-size:13px;word-break: break-all;'>اشتراک گذاری: <a href='https://aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/fa/'>aqicn.org/faq/2013-09-09/revised-pm25-aqi-breakpoints/fa/</a></i><br><div class='entry-content' ng-controller='MainController as ctrl'> <p>به دلایل تاریخی، فرمول تبدیل AQI که برای برخی از شهرهای پروژه شاخص کیفیت هوای جهانی استفاده می‌شود <a href='http://www.epa.gov/airquality/particlepollution/2012/decfsstandards.pdf' target=_>، از استاندارد به‌روزرسانی شده EPA PM <sub>2.5</sub> در سال 2012</a> استفاده نمی‌کرد. (این فقط برای شهرهای آسیا مانند ژاپن و تایوان مناسب است. سایر قاره ها (آمریکا، اروپا و استرالیا) همیشه از استاندارد 2012 استفاده می کنند.</p> <p>تغییر اصلی این استاندارد به روز شده EPA است که در 14 دسامبر 2012 منتشر شد، در مقایسه با استاندارد قبلی (منتشر شده در سال 1999)، کاهش (محدود کردن) سطح PM <sub>2.5</sub> AQI 50 از 15 میکروگرم بر متر <sup>مکعب</sup> به 12 میکروگرم بر متر <sup>مکعب</sup> ، و این امر به منظور اجرای استانداردهای دقیق تر کیفیت هوا.</p> <p>از 9 سپتامبر 2013، همه کشورها اکنون از همان مقیاس تبدیل PM2.5 AQI استفاده می کنند که در این جدول منعکس شده است:</p> <br> <center><table class='fetching' style='width:80%!important'><tr style='min-height:30px;'><td width=30% style='background:#aaaaaa;color:#dddddd;'>AQI Category</td><td width=20% >Index Values<td width=25% >Previous Breakpoints<br><small>(µg/m<sup>3</sup>, 24-hour average)<td width=25% >Revised Breakpoints<br><small>(µg/m<sup>3</sup>, 24-hour average)<tr style='min-height:30px;'><td width=30% style='background:#009966;color:#ffffff;'>Good</td><td width=20% >0 - 50<td width=25% >0.0 - 15.0<td width=25% >0.0 – <b>12.0</b><tr style='min-height:30px;'><td width=30% style='background:#ffde33;color:#000000;'>Moderate</td><td width=20% >51 - 100<td width=25% >>15.0 - 40<td width=25% >12.1 – <b>35.4</b><tr style='min-height:30px;'><td width=30% style='background:#ff9933;color:#000000;'>Unhealthy for Sensitive Groups</td><td width=20% >101 – 150<td width=25% >>40 – 65<td width=25% >35.5 – <b>55.4</b><tr style='min-height:30px;'><td width=30% style='background:#cc0033;color:#ffffff;'>Unhealthy</td><td width=20% >151 – 200<td width=25% >> 65 – 150<td width=25% >55.5 – 150.4<tr style='min-height:30px;'><td width=30% style='background:#660099;color:#ffffff;'>Very Unhealthy</td><td width=20% >201 – 300<td width=25% >> 150 – 250<td width=25% >150.5 – 250.4<tr style='min-height:30px;'><td width=30% style='background:#7e0023;color:#ffffff;'>Hazardous</td><td width=20% >301 – 400<td width=25% >> 250 – 350<td width=25% >250.5 – 350.4<tr style='min-height:30px;'><td width=30% style='background:#7e0023;color:#ffffff;'>Hazardous</td><td width=20% >401 – 500<td width=25% >> 350 – 500<td width=25% >350.5 – 500</table></center> <br> <style> table.aqicomptable { border:0px solid black; border-spacing:0px; } table.aqicomptable td { margin:0px; padding:0px; } </style> <br> On a PM<sub>2.5</sub> particule mass scale from 0µg/m<sup>3</sup> to 100µg/m<sup>3</sup>, here is a visual comparison for the old and new standard AQI grades: <br> <br> <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>Old AQI<br>Standard:</td><td colspan=150 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=350 style='background:#cc0033;color:#ffffff;text-align:center;'><i>150.....</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>New AQI<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.....</i></td></tr></table></center><br> <br> The Ozone calculation has also been updated to taken into account the <a href='http://www.nws.noaa.gov/ost/air_quality/FAQ_01172011.pdf'>8-hours standard</a>: The Ozone AQI is the calculated as the maximum of the 1-hour and 8 hours AQI, where the 1 hour AQI is only valid above 100 and the 8 hours AQI below 300. The 8 hour averaging is based on the calculation described in the <a href='http://www.arb.ca.gov/regact/area06/appe.pdf'>procedure for calculating state 8-hour ozone concentrations</a>. <br> <br> <center><table class='fetching' style='width:80%!important'><tr style='min-height:30px;'><td width=30% style='background:#aaaaaa;color:#dddddd;'>AQI Category</td><td width=20% >Index Values<td width=25% >8-hours breakpoints<br><small>(ppm)<td width=25% >1-hour breakpoints<br><small>(ppm)<tr style='min-height:30px;'><td width=30% style='background:#009966;color:#ffffff;'>Good</td><td width=20% >0 - 50<td width=25% >0 - 60<td width=25% >-<tr style='min-height:30px;'><td width=30% style='background:#ffde33;color:#000000;'>Moderate</td><td width=20% >51 - 100<td width=25% >60 - 75<td width=25% >-<tr style='min-height:30px;'><td width=30% style='background:#ff9933;color:#000000;'>Unhealthy for Sensitive Groups</td><td width=20% >101 – 150<td width=25% >75 – 95<td width=25% >125 - 165<tr style='min-height:30px;'><td width=30% style='background:#cc0033;color:#ffffff;'>Unhealthy</td><td width=20% >151 – 200<td width=25% >95 – 115<td width=25% >165 - 205<tr style='min-height:30px;'><td width=30% style='background:#660099;color:#ffffff;'>Very Unhealthy</td><td width=20% >201 – 300<td width=25% >115 – 375<td width=25% >205 - 405<tr style='min-height:30px;'><td width=30% style='background:#7e0023;color:#ffffff;'>Hazardous</td><td width=20% >301 – 500<td width=25% >-<td width=25% >405 - 505</table></center><br> <br> </div></div></div></div><center style='border-top: 1px solid #ccc'><center style='margin:10px 0;'><ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-0281575029452656" data-ad-slot="2455076269" data-ad-format="auto"></ins></center><script>(adsbygoogle = window.adsbygoogle || []).push({});</script><div class='section-content'><a href='/faq/" . srvLang() . "'><span>برای مشاهده تمام ورودی های پرسش و پاسخ اینجا را کلیک کنید</span></a><div style='margin-left: 20px;line-heigh:1.5;color:#888;' class='faqmore'><style type='text/css'>.faqmore li a:hover {background: #62a6c8;color: white;text-decoration: none;}.faqmore li a {color: #888;}</style><li><a href='https://aqicn.org/scale/fa/'>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/fa/'>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/fa/'>Nitrogen Dioxyde (NO<sub>2</sub>) in our atmosphere</a></li></div><div style='height:1px;background-color:#aaaaaa;width:220px;margin-top:5px;'></div><center><script>var i18nTexts=(i18nTexts||[]);i18nTexts.push({"wa.KqlOlZrllRNJ+7u88XlbL2RQFwo=":"\u0627\u0648\u0647.. \u0645\u0634\u06a9\u0644\u06cc \u067e\u06cc\u0634 \u0622\u0645\u062f. 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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 >مقادیر شاخص کیفیت هوا (AQI).<td>سطوح نگرانی سلامت</td></tr></thead><tr style="background-color:#009966;"><td class='aqiwtxt' nowrap="true">0 - 50</td><td class='aqiwtxt'>خوب</td><td class='aqiwtxt'>کیفیت هوا رضایتبخش است و آلودگی هوا کم یا بدون خطر است</td></tr><tr style="background-color:#ffde33" class='aqibtxt'><td class='aqibtxt' nowrap="true">51 -100</td><td class='aqibtxt'>در حد متوسط</td><td class='aqibtxt'>کیفیت هوا قابل قبول است با این حال، برای بعضی از آلاینده ها ممکن است نگرانی سلامت متوسط برای تعداد بسیار کمی از افرادی که به طور غیر منتظره ای نسبت به آلودگی هوا حساس هستند، وجود داشته باشد.</td></tr><tr style="background-color:#ff9933;"><td class='aqibtxt' nowrap="true">101-150</td><td class='aqibtxt'>ناسالم برای گروه های حساس</td><td class='aqibtxt'>سلامتی گروه های حساس ممکن است تحت تاثیر قرار بگیرد.عموم مردم احتمالا تحت تاثیر قرار نخواهند گرفت.</td></tr><tr style="background-color:#cc0033;"><td class='aqiwtxt' nowrap="true">151-200</td><td class='aqiwtxt'>ناسالم</td><td class='aqiwtxt'>همه ممکن است اثرات آلودگی بر سلامتیشان را احساس کنند؛ اعضای گروه های حساس ممکن است اثرات منفی جدی تری بر سلامتی شان احساس کنند.</td></tr><tr style="background-color:#660099;"><td class='aqiwtxt' nowrap="true">201-300</td><td class='aqiwtxt'>خیلی ناسالم</td><td class='aqiwtxt'>هشدارهای بهداشتی در شرایط اضطراری. کل جمعیت بیشتر احتمال دارد تحت تأثیر قرار گیرد.</td></tr><tr style="background-color:#7e0023;"><td class='aqiwtxt' nowrap="true">300+</td><td class='aqiwtxt'>خطرناک</td><td class='aqiwtxt'>هشدار سلامت: هرکس ممکن است اثرات جدی سلامتی را تجربه کند</td></tr></table></div><br>برای اطلاعات بیشتر در مورد کیفیت هوا و آلودگی، <a href='http://en.wikipedia.org/wiki/Air_quality'>موضوع کیفیت هوا در ویکی‌پدیا</a> یا <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>راهنمای airnow برای کیفیت هوا و سلامت شما را</a> بررسی کنید.<br><br>برای توصیه های بهداشتی بسیار مفید دکتر پکن ریچارد سنت سیر، وبلاگ <a href='http://www.myhealthbeijing.com/'>www.myhealthbeijing.com</a> را بررسی کنید.<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>اطلاعیه درمورد شرایط استفاده</b>: تمام اطلاعات کیفیت هوا در زمان انتشار تایید نشده است و با توجه به عدم اطمینان از کیفیت این اطلاعات ممکن است بدون اطلاع قبلی در هر زمانی اصلاح شود. پروژه <a href='https://aqicn.org'> شاخص کیفیت جهانی هوا </a> با استفاده از تمام مهارت ها و مراقبت های معقول در انتشار محتویات این اطلاعات، تحت هیچ شرایطی <a href='https://aqicn.org'> شاخص کیفیت جهانی هوا </a> تیم پروژه یا نمایندگان آن برای هر گونه از دست دادن، آسیب یا آسیب ناشی از عرضه اطلاعات مسئولیتی را قبول 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