Predicting levels of air pollution in London

We predict London’s air pollution levels using a model that estimates how pollution will spread over time and distance. The pollutants modelled for the Mayor’s Air Quality Strategy are nitrogen dioxide (NO2) and particulate matter (PM10 and PM2.5) as these are often linked with health problems. The EU has also set target levels for these pollutants that each member state must achieve.

Every year we put together the London Atmospheric Emission Inventory (LAEI).  You can access the latest copy at:

This database has information on emissions from all sources in Greater London that can be identified.  The current LAEI includes emissions data for the ‘base year’ 2008 and projections for years 2011 and 2015. We are constantly working to improve the data and share it with all London boroughs for free.