Air Topics
Learn how air pollution can harm your health and the environment, and what EPA is doing to protect the air we breathe.
Pollution & Air Quality
- Acid Rain
- Climate Change
- Climate Change Indicators including temperature and weather changes
- Climate Change Research
- Ozone Layer Protection
- Visibility
Indoor Air
Emissions
Air Quality by Location
Air Pollutants
Criteria (NAAQS) Air Pollutants:
- Carbon Monoxide (CO)
- Lead (Pb)
- Nitrogen Dioxide (NO2)
- Ozone, Ground Level
- Particulate Matter (PM)
- Sulfur Dioxide (SO2)