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The Mayor of London The London Assembly

Air Quality Data

Every year, thousands of Londoners are dying prematurely from long-term exposure to air pollution and our latest research shows that hundreds of schools are located in areas exceeding safe legal pollution levels.

The GLA and TfL work in partnership to produce a comprehensive set of air quality datasets. These enable our organisations to formulate evidence-based policy and guide boroughs as they improve air quality locally.

London Atmospheric Emissions Inventory (LAEI)

The LAEI is the key tool for air quality analysis and policy development in London. It is a regularly updated database of pollutant emissions and sources including geographically referenced data and maps.

London Local Air Quality Management (LLAQM)

The LLAQM is a collection of maps, data and graphs produced individually for each of London’s boroughs and the City of London. It is produced using the latest version of the LAEI.

NO2 Focus Areas

Air Quality Fact Sheets

London Air Quality Map

This map shows the locations of air quality monitoring stations across London and the areas covered by Google Street View cars fitted with mobile air quality sensors.

It also features the Mayor’s actions to tackle air pollution including the Ultra Low Emission Zone, Low Emission Bus Zones, rapid charge points and schools and nurseries that were a part of the Mayor’s audit programme.

You can also view air quality data with Nitrogen Dioxide (NO2) levels from 2016 and projected levels for 2025 following the Mayor’s actions as set out in the London Environment Strategy.