Following the release of the latest London Atmospheric Emissions Inventory (LAEI) 2022, additional data has been produced at Borough level, to assist London boroughs with their LLAQM (London Local Air Quality Management) duties. Update May 2026: Emission datasets have been revised for a number of boroughs, following discrepancies identified in the previous update (December 2025). Please refer to the...

Update August 2025: The LAEI 2019 has now been superseded. Click here to access the LAEI 2022 data The LAEI 2019 is the latest version of the London Atmospheric Emissions Inventory and replaces previous versions of the inventory. Emissions estimates of key pollutants (NOx, PM10, PM2.5 and CO2) by source type are included for the base year 2019 and forecast...

According to the LAEI 2019, there are 160 Air Quality Focus Areas in London. The Focus Areas are locations that not only exceed the EU annual mean limit value for NO2 but are also locations with high human exposure. They were defined to address concerns raised by boroughs within their Local Air Quality Management (LAQM) review process and forecasted air pollution trends. This is not...

Following the release of the latest London Atmospheric Emissions Inventory (LAEI) 2019, additional data has been produced at Borough level, to assist London boroughs with their LLAQM (London Local Air Quality Management) duties. The data below is based on the NOx, NO2, PM10 and PM2.5 emissions and ground level NOx, NO2 and PM concentrations already published as part of the LAEI 2019. It includes the...

The LAEI 2016 has been superseded. Click here for the full list of releases. Emissions estimates of key pollutants (NOx, PM10, PM2.5 and CO2) by source type are included for the base year 2016. Emissions for previous years 2010 and 2013 have also been recalculated, using the latest data sources (emission factors, activity data, ...) and methodology. Emissions projected...