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href='https://aqicn.org/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/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/products/ar/' 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class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-faq menubar-icon-main' title='faq'></div><span class='menubar-text-second'>faq</span></div></a></td><td class='menubar-cell'><a href='/city/all/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-search menubar-icon-main' title='search'></div><span class='menubar-text-second'>search</span></div></a></td><td class='menubar-cell'><a href='/contact/' class='menubar-text'><center><div class='menubar-button' ontouchend='this.style.backgroundColor="rgb(127,194,227)";'><div class='sprite-isprt-web-talk menubar-icon-main' title='contact'></div><span class='menubar-text-second'>contact</span></div></a></td><td class='menubar-cell'><a href='/links/' class='menubar-text'><center><div class='menubar-button' 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52.148 58.02 54.239 55.537 54.34 z" style="stroke: none; stroke-width: 1; stroke-dasharray: none; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; fill: #25a1de; fill-rule: nonzero; opacity: 1;" transform=" matrix(1 0 0 1 0 0) " stroke-linecap="round" /></g></svg></a><script>try{tlite.enable(document.getElementById('share-reddit'),{text:"<div style='font-size:120%'>Share on reddit:<\/div>Air Quality | Product Listing<br>(https:\/\/aqicn.org\/products\/)"});}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;'>Share: <a href='https://aqicn.org/products/'>aqicn.org/products/</a></i><br></div><div style='clear:both;margin-bottom:10px;'></div> <p class='bigletter'>There are so many air quality related products on the market; Some are good, other are bad. For consumers like us, it can sometime be difficult to find out which product is good and worth buying and which one is bad and should not be bought. For this reason, we have created this 'Air Quality Products' page on which you will find a selection of products that we have carefully studied and evaluated.</p> <br> <style type="text/css"> .product { box-shadow: 0px 0px 3px rgba(0,0,0,.20); display: inline-block; background: #fff; vertical-align: top; margin:5px; width:350px; max-width: 100%; height:320px; cursor: pointer; } .product:hover { background: #f8f8f8; } .product div.title { text-align: center; font-size: 120%; height: 60px; line-height: 1.2; display: table-cell; vertical-align: middle; width: 100%; } .product div.image { border: 1px solid #eeeeee; background-color: #f8f8f8; margin:10px; height:0px; } .product div img { max-width:100%; } .product div.image-overlay { height:0px; opacity: .5; } @media only screen and (max-width: 1024px) { .product { width:300px;height:300px; } } @media only screen and (max-width: 768px) { .product { width:350px;height:320px; } } </style> <center> <a href='/mask/'> <div class='product'> <div class='title'>Protection Masks & Respirators</div> <div class='image'><img src="/air/view/products/images/respirators.png" ></div> </div> </a> <div class='product'> <div class='title'>Home Air Purifiers</div> <div class='image'><img src="/air/view/products/images/air-purifiers.png" ></div> <div class='image-overlay'><img src="/air/view/products/images/comming-soon-overlay.png" ></div> </div> <div class='product'> <div class='title'>Personal Air Quality Monitors</div> <div class='image'><img src="/air/view/products/images/personal-air-quality-monitors.png" ></div> <div class='image-overlay'><img src="/air/view/products/images/comming-soon-overlay.png" ></div> </div> <a href='/sensor/'> <div class='product'> <div class='title'>DIY Air Quality Sensors</div> <div class='image'><img src="/air/view/products/images/sensors.png" ></div> </div> </a> <a href='/products/monitoring-stations/'> <div class='product'> <div class='title'>Professional Air Quality Monitoring Stations</div> <div class='image'><img src="/air/view/products/images/aqms.png" ></div> </div> </a> <div class='product'> <div class='title'>Professional Air Cleaners</div> <div class='image'><img src="/air/view/products/images/electrostatic-precipitator.png" ></div> <div class='image-overlay'><img src="/air/view/products/images/comming-soon-overlay.png" ></div> </div> </center> <p> If you would like to suggest a new product, please go to the <a href='/products/register/'>registration page</a>. Registration is free, but please note that we are very strict about quality and certification, so if your product is not certified, we will most likely not be able to accept it. </p><br><br></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='h1header3' 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('#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>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. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.</div> <br> <br> <br> </center> <style type="text/css"> @media print { #fixed-menubar, #footer-overlay { display: none } } .footer { background: #138fcc; background-attachment: fixed; background-image: url("https://aqicn.org/images-static/bluesky-banner-panoramic-dark.jpg"); background-position: top center, bottom center; background-size: auto 100%; position: relative; text-align: center; font-weight: normal; margin: 0 auto; color: white; width: 100%; font-family: "Noto Serif", Cambria, "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif; } #fixed-menubar { font-family: "Noto Serif", Cambria, "Palatino Linotype", "Book Antiqua", "URW 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Romanian</option><option value='https://aqicn.org/products/bg/' >български - Bulgarian</option><option value='https://aqicn.org/products/ur/' >اردو - Urdu</option><option value='https://aqicn.org/products/hi/' >हिंदी - Hindi</option><option value='https://aqicn.org/products/ar/' >العربية - Arabic</option><option value='https://aqicn.org/products/sr/' >Српски - Serbian</option><option value='https://aqicn.org/products/bn/' >বাংলা - Bangla</option><option value='https://aqicn.org/products/bs/' >босански - Bosnian</option><option value='https://aqicn.org/products/hr/' >hrvatski - Croatian</option><option value='https://aqicn.org/products/tr/' >Türkçe - Turkish</option><option value='https://aqicn.org/products/uk/' >українська - Ukrainian</option><option value='https://aqicn.org/products/cs/' >čeština - Czech</option><option value='https://aqicn.org/products/be/' >беларускі - Belarusian</option></select> </div> <br> <table> <tr><td> <center> <i>Temperature unit:</i><br> <span style='font-size:18px'> <span style='display:;' id='settings-temp-label-on'>Celcius</span> <span style='display:none;' id='settings-temp-label-off'>Fahrenheit</span> </span> </center> </td><td> <div class="onoffswitch" onclick='settingsMenu.click("temp")'> <input type="checkbox" name="onoffswitch" class="onoffswitch-checkbox" id="settings-temp" checked > <label class="onoffswitch-label" for="myonoffswitch"> <span class="onoffswitch-inner"></span> <span class="onoffswitch-switch"></span> </label> </div> </table> </center> <br> </div> <div style='display:none;height:0px;' id='settingsdiv-arrow'><div style='width: 0; height: 0; border: 7px solid transparent;top:0px;border-top: 7px solid #fff;position:relative;;margin-left:100px;'></div></div> </div> <script> function CSettingsMenu() { var self=this; var isInit = false; var timeout = null; var isPopup = false; this.show = function() { log("show!"); if (isPopup) { this.close(); return; } isPopup = true; $("#settingsdiv-arrow").hide(); 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