The World Air Quality Index project is a non-profit project started in 2007. Its mission is to promote air pollution awareness for citizens and provide a unified and world-wide air quality information.
The project is providing transparent air quality information for more than 130 countries, covering more than 30,000 stations in 2000 major cities, via those two websites: aqicn.org and waqi.info.
The project, despite its social intent and expensive outreach, has never received any public funding. The limited income, essentially from online ads, is used to cover the infrastructure and hardware cost. Engineering work is contributed.
The project is constantly looking for support from more contributors. It has now received active contributions from more than 16061 citizens from 139 countries: