# Counties in Georgia by share of days unhealthy for sensitive groups or worse (US EPA AQI), 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_unhealthy_sensitive_or_worse_days_share`
- Unit: %
- Definition: Days with a daily Air Quality Index above 100 (unhealthy for sensitive groups, unhealthy, very unhealthy or hazardous) as a percentage of the days of the year with an AQI in a US county. Calculated by Invokely from the day counts in the EPA AirData annual summaries; the counts are stored with each value.
- Source: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts (https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual)
- Retrieved: 2026-10-12
- Citation: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/unhealthy-air-quality-days-share/georgia-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Rockdale County | 3.8 |
| 2 | Fulton County | 3.6 |
| 3 | Douglas County | 2.9 |
| 4 | DeKalb County | 2.5 |
| 4 | Gwinnett County | 2.5 |
| 4 | Henry County | 2.5 |
| 7 | Clarke County | 1.7 |
| 7 | Hall County | 1.7 |
| 7 | Wilkinson County | 1.7 |
| 10 | Bibb County | 1.4 |
| 10 | Muscogee County | 1.4 |
| 12 | Pike County | 1.2 |
| 13 | Cobb County | 1.1 |
| 13 | Richmond County | 1.1 |
| 15 | Walker County | 0.9 |
| 16 | Chatham County | 0.8 |
| 16 | Clayton County | 0.8 |
| 16 | Dawson County | 0.8 |
| 16 | Washington County | 0.8 |
| 20 | Glynn County | 0.6 |
| 20 | Houston County | 0.6 |
| 22 | Paulding County | 0.5 |
| 23 | Murray County | 0.4 |
| 23 | Sumter County | 0.4 |
| 25 | Coweta County | 0.3 |
| 26 | Charlton County | 0 |
| 26 | Chattooga County | 0 |
| 26 | Coffee County | 0 |
| 26 | Columbia County | 0 |
| 26 | Dougherty County | 0 |
| 26 | Floyd County | 0 |
| 26 | Lowndes County | 0 |