London Average Air Quality Levels

Name: London Average Air Quality Levels
Creator: Greater London Authority

data.gov.uk (National Data Library) no licence stated Greater London Authority · updated 2026-08-13

The data shows roadside and background average readings for Nitric Oxide, Nitrogen Dioxide, Oxides of Nitrogen, Ozone, Particulate Matter (PM10 and PM2.5), and Sulphur Dioxide. Measured in Micrograms per Cubic Meter of Air (ug/m3). The spreadsheet shows which Index level each reading falls in, and contains charts showing pollutant levels by time of day per month. Trend graphs of Nitrogen Dioxide and Particulate Matter PM2.5 are on the London Dashboard. Link to GLA Air Quality page

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Contains public sector information licensed under the Open Government Licence v3.0 and other licences as stated per dataset. Metadata collated by the UK Open Data Index.