Air Quality Historical Data Platform
Institution & University Registration


Since the begining, the World Air Quality Index (WAQI) project team has always been keen on providing a transparent Air Qualitty Infomration to the world citizens.
The WAQI project has also always been keen on providing historical Air Quality Data to relevant institutions and organizations working in the area of environmental awareness, air quality monitoring, as well as health and epidemiological studies. Here are few of our partners and colleagues to which we have been providing historical air quality data information:

United Framework



In order to make the historical Air Quality Data dissemination even more relevant, the World Air Quality Index team has been investigating with the most relevant international institutions the possibility to setup an open data framework. Here are fews of the institutions we have engaged:

  • WHO - World Health Organization
  • UNEP - United Nation Environmental Program
  • UNIDO - United Nation Industrial Development Organization
  • WMO - World Meteorological Organization
  • GEO - Group on Earth Observations
  • WRI - World Resource Institute
  • CCA - Climate & Clean Air Coalition

The open data framework objective is to provide unlimited and free access the world historical and real-time Air Quality data from the 70+ countries covered on aqicn.org Everyone - both institutions as well as citizens - agrees that this is not only a good idea, but that it should *just* happen.

Supporting the Project

The World Air Quality project might look big, but it is actually a small and motivated team who is doing the work.

The project has never received any financial support or fundings from any of the above world institutions, nor from any government or NGO. The project income is based on advertising, and the largest part of it is used to support the IT cost. The rest of the income is used for attending conferences as well as several experimentations and monitor & sensor development.

Developing this open data platform requires time and effort. It does not just happens overnight, but it is the fruit of collaboration between environmental and health scientists and engineers. It requires more IT infrastructure and dedicated engineers for the implementation. This is why we need help. Your help! Check this page for more info.

Inquiry & Registration

If you are from an international institution, organization or university and want to join this effort, please register your interest with the form below. Note that this registration is only at intent level, for us to consolidate the list of all interested parties, and does not bound you to any obligations.
Institution & University Registration - subscription form
Enter your name - eg "John Doe"
Enter your email address - eg "john.doe@mail.com"
Enter your organization - eg "Harvard Business School"
Enter your position - eg "Student, Researcher, Head"
Write few words about your request - eg: "I would like to get the daily max AQI for Berlin for Winter 2014", "I would like to know the hourly concentration of SO2 for Civil Lines in Delhi on June 18th 2015", "I would like to support your project and give you hand", ..
Confirm that you are a human:
Then click on this submit button:

Data Credits

The open data framework would not be possible without the work from the worldwide EPA, which should get the credits for their monitoring programs.

關於空氣質量與空氣污染指數

本網站採用的污染指數和顏色與EPA是完全相同的。 EPA的指數可以從 AirNow上查到

空气质量指数 空气质量指数级别(状况)及表示颜色 对健康影响情况 建议采取的措施
0 - 50 一级(优) 空气质量令人满意,基本无空气污染 各类人群可正常活动
51 -100 二级(良) 空气质量可接受,但某些污染物可能对极少数异常敏感人群健康有较弱影响 极少数异常敏感人群应减少户外活动
101-150 三级(轻度污染) 易感人群症状有轻度加剧,健康人群出现刺激症状 儿童、老年人及心脏病、呼吸系统疾病患者应减少长时间、高强度的户外锻炼
151-200 四级(中度污染) 进一步加剧易感人群症状,可能对健康人群心脏、呼吸系统有影响 儿童、老年人及心脏病、呼吸系统疾病患者避免长时间、高强度的户外锻炼,一般人群适量减少户外运动
201-300 五级(重度污染) 心脏病和肺病患者症状显著加剧,运动耐受力降低,健康人群普遍出现症状 儿童、老年人及心脏病、肺病患者应停留在室内,停止户外运动,一般人群减少户外运动
300+ 六级(严重污染) 健康人群运动耐受力降低,有明显强烈症状,提前出现某些疾病 儿童、老年人和病人应停留在室内,避免体力消耗,一般人群避免户外活动
(参考详见 http://zh.wikipedia.org/wiki/空气质量指数)

如果你想了解更多有關空氣質量與污染,詳見維基百科或者 AirNow

有關健康建議詳​​見北京的Richard Saint Cyr MD醫生的博客:www.myhealthbeijing.com


Usage Notice: 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.



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Temperature unit:
Celcius