This is a bulk data download resource for air pollution measurements hosted by Defra's UK-AIR web pages - see also http://uk-air.defra.gov.uk/.
Monitoring networks and pollutants included are those covered by http://uk-air.defra.gov.uk/networks/ with the exception of diffusive sampler measurements which are not in scope at this stage. Measurements are available for the period 1973 to 2014 inclusive. Measured pollutant concentrations, aggregated statistics and station configuration information (location, analyser type, inlet height etc.) are provided in XML format based the European Air Quality e-Reporting schema (further information at http://www.eionet.europa.eu/aqportal/).