Detailed PM2.5 Raw Data

PM2.5 Data Analysis

Maps of county weighted annual arithmetic means and annual 98th percentiles from this network have been drawn for successive 3-year periods. County statistics are displayed on each map and may also be found in the corresponding tables.

Certain data documented as having been affected by forest fires have been excluded from our averages. However, we anticipate that the US EPA will publish averages in which these data are included.