View information about outdoor air pollutants.
View by County
Click on the following links to view the data in table format:
Fine Particulate (PM 2.5):
- Table 1. PM 2.5: Annual Average Concentration by County
- Table 2. PM 2.5: Annual Percent of Monitored Days Above National Ambient Air Quality Standard
- Table 3. PM 2.5: Person-Days Above National Ambient Air Quality Standard