The Environmental Protection Agency's Aerometric Information Retrieval System (AIRS) Data Maps provide data on pollutants for which the EPA has established national standards. The data come in ready-to-view national maps, or the AIRS Graphics page allows users generate their own maps and charts by specifying criteria such as dates, locations, and pollutant names. Two main types of data include air...

The AirData Web site provides access to air pollution data for the entire United States. Users can discover the highest ozone levels in their state, where sources of air pollution are located, and much more. The Environmental Protection Agency offers annual summaries of air pollution data from two databases: Air Quality System (AQS) and the National Emission Inventory (NEI). Users can discover the...