Ambient Air Monitoring Program

The sources of pollutants seen on the previous page were assembled into seven categories for the following graphs. The major contributors for CO and NO_x are highway vehicles, while the largest contributors of SO2₂ are electric utilities. Wildland and prescribed fires can have a large impact on PM_2.5 emissions, and VOCs come from a variety of stationary sources. There is a downward trend shown here for all emissions from 2010 through 2022. In 2011, there was a wildfire in the Okefenokee Swamp area that showed an uptick in the data for that year.

You can also view EPA's report on National Air Quality Trends