Fact Sheets and Additional information Regarding the 2012 Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS)
On December 14, 2012, the EPA strengthened the annual health-based standard for fine particles to a level of 12.0 micrograms per cubic meter (μg/m3) and retained the other particulate matter (PM) standards.
This page contains a variety of fact sheets and other documents describing that action.
For more information, visit the 2012 PM NAAQS page.
- Overview of EPA's Revisions to the Air Quality Standards for Particle Pollution (Particulate Matter) (pdf)
- Particle Pollution and Health (pdf)
- EPA's Revised Air Quality Standards for Particle Pollution: Monitoring, Designations and Permitting Requirements (pdf)
- Revised Air Quality Standards for Particle Pollution and Updates to the Air Quality Index (AQI) (pdf)
- Map of the United States Counties that do not meet the Annual Health-based Fine Particle Standard of 12 μg/m3 (pdf)
- Map of the United States Counties Projected to meet the annual Health-based Fine Particle Health Standard of 12 μg/m3 in 2020 (pdf)
- Fine Particle Concentrations Based on Monitored Air Quality from 2009 - 2011 Table (pdf)
- Projected Fine Particle Concentrations for Counties with Monitors in 2020 Table (pdf)