# Counties in Georgia by median Air Quality Index (US EPA), 2016

All 32 values come from U.S. Environmental Protection Agency for 2016, so the places are comparable. 7 counties have no value for that period and are not ranked.

- Indicator id: `aqi_median`
- Unit: index
- Definition: Median of the daily Air Quality Index (AQI) values of a US county over the days of the year with an AQI, from the EPA AirData annual summaries. The daily county AQI is the highest AQI among the monitors and pollutants reported that day (ozone, PM2.5, PM10, carbon monoxide and nitrogen dioxide). Lower is cleaner: 0 to 50 is good, 51 to 100 moderate and above 100 unhealthy for sensitive groups.
- Source: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: median daily AQI (https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual)
- Publisher page: https://invokely.ai/en/publishers/environmental-protection-agency
- Retrieved: 2026-10-12
- Citation: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/median-air-quality-index/georgia-counties

| Rank | Place | index |
|---:|---|---:|
| 1 | DeKalb County | 57 |
| 2 | Fulton County | 55 |
| 3 | Paulding County | 52 |
| 4 | Walker County | 51 |
| 5 | Bibb County | 50 |
| 5 | Cobb County | 50 |
| 7 | Floyd County | 49 |
| 8 | Dougherty County | 48 |
| 9 | Clayton County | 46 |
| 9 | Gwinnett County | 46 |
| 9 | Richmond County | 46 |
| 12 | Chatham County | 44 |
| 12 | Clarke County | 44 |
| 12 | Henry County | 44 |
| 12 | Houston County | 44 |
| 12 | Muscogee County | 44 |
| 12 | Rockdale County | 44 |
| 12 | Wilkinson County | 44 |
| 19 | Coweta County | 43 |
| 19 | Douglas County | 43 |
| 19 | Lowndes County | 43 |
| 19 | Murray County | 43 |
| 23 | Chattooga County | 42 |
| 23 | Dawson County | 42 |
| 25 | Coffee County | 41 |
| 25 | Glynn County | 41 |
| 27 | Columbia County | 40 |
| 27 | Hall County | 40 |
| 27 | Pike County | 40 |
| 30 | Sumter County | 39 |
| 31 | Washington County | 38 |
| 32 | Charlton County | 31 |