Sections: Air Pollution Foundations

Learn about Asthma (US EPA)

The EPA’s home page for asthma, including basic information, resources to help manage asthma triggers, ways to take action, and resources on indoor air quality.

Criteria Pollutants (US EPA)

Information on the criteria air pollutants regulated by the Clean Air Act’s National Ambient Air Quality Standards (NAAQS): CO, PM, O3, NO2, SO2 and lead.
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