Particulate Matter (PM) Pollution

Particulate Matter (PM) Implementation Regulatory Actions

The Clean Air Act requires EPA to set National Ambient Air Quality Standards (NAAQS) for six criteria pollutants; particle pollution (also known as particulate matter) is one of these.  EPA works with partners at state, local, and tribal air quality agencies to meet these standards.

The following list provides a collection of rules and guidance documents for implementation the more recent particulate matter (PM) standards.

To see a table of all of the PM NAAQS visit our Historical Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) page.