This site provides access to yearly summaries of United States air pollution data, taken from the Environmental Protection Agency’s (EPA) air pollution databases. Data is provided for all fifty states plus the District of Columbia, Puerto Rico, and the U.S. Virgin Islands.
This site was developed to provide the public with easy access to national air quality information. The site offers daily Air Quality Index (AQI) forecasts, as well as real-time AQI conditions for cities across the United States. It also provides links to more detailed state and local air quality sites.
Environmental Protection Agency – Learn about Air
The EPA site provides information on a variety of topics related to air. This page provides access to information on acid rain, air pollution, ozone monitoring, vehicle emissions, and much more.