OpenAQ is an open-source project to surface live, real-time air quality data from around the world. Its “mission is to enable previously impossible science, impact policy and empower the public to fight air pollution.” The data include air pollutant measurements for PM10, PM2.5, sulfur dioxide (SO₂), carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), and black carbon (BC) from over 5,400 locations in 48 countries as of June 2017. Scientists, researchers, developers, and citizens can use these data to understand how air quality in different locations changes over time.
OpenAQ has 5 criteria for including data sources in its platform:
1) Data must represent one of these pollutant types: PM10, PM2.5, SO₂, CO, NO₂, O₃, or BC;
2) data must be from an official-level stationary, outdoor air quality source, defined as data produced by a government entity or international organization;
3) data must be "raw" and reported in physical concentrations on their originating site;
4) data must be at the "station-level," not aggregated into a higher (e.g., city) level;
5) data must be from measurements averaged between 10 minutes and 24 hours.
Black carbon is the sooty black material emitted from gas and diesel engines, coal-fired power plants, and other sources that burn fossil fuel. It comprises a significant portion of particulate matter or PM, which is an air pollutant.
Black carbon is a global environmental problem that has negative implications for both human health and our climate. Inhalation of black carbon is associated with health problems including respiratory and cardiovascular disease, cancer, and even birth defects. Black carbon also contributes to climate change causing changes in patterns of rain and clouds.
Resource Watch shows only a subset of the dataset. For access to the full dataset and additional information, see the Learn More link.
OpenAQ Air Quality Readings
Data on the OpenAQ Application Programming Interface (API) are as reported by official entities. All quality control and data verification should be performed by users.
Hasenkopf, Christa A., David C. Adukpo, Michael Brauer, H. Langley Dewitt, Sarath Guttikunda, Alaa I. Ibrahim, Delgerzul Lodoisamba, et al. 2016. "To Combat Air Inequality, Governments and Researchers Must Open Their Data." Clean Air Journal = Tydskrif vir Skoon Lug 26 (2): 8-10. Accessed through Resource Watch, (date). www.resourcewatch.org.
Argentina, Australia, Austria, Bahrain, Bangladesh, Belgium, Bosnia and Herzegovina, Brazil, Canada, Chile, China, Colombia, Croatia, Czech Republic, Denmark, Ethiopia, Finland, France, Germany, Gibraltar, Hungary, India, Indonesia, Ireland, Israel, Kosovo, Kuwait, Former Yugoslav Republic of Macedonia, Mexico, Mongolia, Nepal, the Netherlands, Nigeria, Norway, Peru, the Philippines, Poland, Russian Federation, Singapore, Spain, Sweden, Taiwan (Province of China), Thailand, Turkey, Uganda, United Kingdom, United States, Vietnam
Varies by country and source