Air Pollution Information Service - run by DEFRA
UK Air Quality Data and Statistics Database. These pages contain options for you to enter queries to the database and retrieve statistics relating to Air Quality in the UK from the present back to 1960.
Air Quality Data and Statistics - The database contains tables of measured concentration data and statistics from the monitoring networks operated on behalf of the Defra and the Devolved Administrations. Estimates of emissions - the amount of pollution produced by a range of activities can be obtained from the National Atmospheric Emissions Inventory (NAEI).