There is an invisible threat to Londoners’ health: Air pollution likely contributes to thousands of early deaths in London every year.

Urban residents need better information on pollution’s health effects, as well as readily available — and understandable — air pollution data and analysis. That’s why the Breathe London pilot project mapped and measured pollution across the capital, led for two years by Environmental Defense Fund Europe and launched in partnership with the Mayor of London and leading science and technology experts.

With more than 100 lower-cost sensor pods and specially-equipped Google Street View cars, Breathe London complemented and expanded upon London’s existing monitoring networks. The project aimed to help people better understand their local air quality and support cities around the world with future monitoring initiatives. EDF developed the Breathe London Blueprint for global cities, which includes both a guide for city-level decision-makers and a more detailed Technical Report.

Click on the map to see average pollution levels in London.

Download measured and modelled data from this project »

Data fully processed in accordance with the project's final Quality Assurance and Quality Control (QA/QC) procedures. Data is GMT hour ending. Missing data is indicated with the value -999. Download other data sets »

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