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Air quality in Georgia

EPA monitors report from 29 of Georgia’s 159 counties. That is the honest limit of this page: the other 130 are not measured, not clean. In 2025 the most affected monitored county was Muscogee County, with 5 days above the moderate category.

29
Counties with monitors
130
Counties without
21
Days above moderate, 2025
Summed across monitored counties
10.1%
Adults with asthma
Population-weighted county estimate

County by county

Monitored Georgia counties

GoodModerateUnhealthy for sensitive groupsUnhealthyVery unhealthyHazardous
County90th %ile AQIAbove moderateMax AQI2025 days by category
Muscogee County655166
Fulton County644129
Walker County644181
Pike County513108
Richmond County702130
Bibb County681119
Dougherty County641115
Murray County501112
Charlton County46061
Chatham County59090
Chattooga County48077
Clarke County63089
Clayton County60074
Cobb County47074
Coffee County61098
Columbia County48090
Dawson County46097
DeKalb County61090
Douglas County58097
Floyd County62088
Glynn County57094
Gwinnett County66092
Hall County62082
Henry County56074
Houston County61093
Lowndes County65088
Rockdale County48090
Sumter County49084
Washington County60082

EPA Air Quality System annual summaries by county, 2025. The 90th percentile AQI describes a day worse than nine out of ten, which is a steadier measure than the annual maximum a single wildfire can set.

Not measured

130 counties without a monitor

No EPA monitor reported from these counties, so there is no air quality record to publish. Their radon zone is known, and radon is measured in the building rather than the air outside it.

Other states

Air quality elsewhere