Data / Rankings / Share of days with good air quality (US EPA AQI) / Counties in Georgia

Counties in Georgia by share of days with good air quality (US EPA AQI), 2016

Chattooga County had the highest share of days with good air quality (US EPA AQI) of 32 counties in 2016, at 89.7%. Fulton County had the lowest, at 27.6%. The median was 64.6%. Source: EPA.

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Highest89.7Chattooga County
Lowest27.6Fulton County
Median64.632 counties

Map of counties, 2016

Bibb County: 50.3 %Charlton County: 87.2 %Chatham County: 64.1 %Chattooga County: 89.7 %Clarke County: 66.6 %Clayton County: 55.4 %Cobb County: 50.4 %Coffee County: 65.1 %Columbia County: 89.3 %Coweta County: 66.1 %Dawson County: 88.5 %DeKalb County: 29.2 %Dougherty County: 51.5 %Douglas County: 80 %Floyd County: 51.2 %Fulton County: 27.6 %Glynn County: 74.3 %Gwinnett County: 60.5 %Hall County: 65.5 %Henry County: 65.2 %Houston County: 63.1 %Lowndes County: 61.5 %Murray County: 84 %Muscogee County: 62.8 %Paulding County: 42 %Pike County: 85.5 %Richmond County: 59.2 %Rockdale County: 74.6 %Sumter County: 89 %Walker County: 48.6 %Washington County: 75.6 %Wilkinson County: 59 %
  • Under 51
  • 51 to 60
  • 60 to 65
  • 65 to 72
  • 72 to 85
  • 85 and over
  • No data
%, 2016. Hatched areas have no value for this period. Source: Invokely calculation with data from EPA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2016

Chattooga County: 89.7 %Chattooga County89.7Columbia County: 89.3 %Columbia County89.3Sumter County: 89 %Sumter County89Dawson County: 88.5 %Dawson County88.5Charlton County: 87.2 %Charlton County87.2Pike County: 85.5 %Pike County85.5Murray County: 84 %Murray County84Douglas County: 80 %Douglas County80Washington County: 75.6 %Washington County75.6Rockdale County: 74.6 %Rockdale County74.6Glynn County: 74.3 %Glynn County74.3Clarke County: 66.6 %Clarke County66.6Coweta County: 66.1 %Coweta County66.1Hall County: 65.5 %Hall County65.5Henry County: 65.2 %Henry County65.2Coffee County: 65.1 %Coffee County65.1Chatham County: 64.1 %Chatham County64.1Houston County: 63.1 %Houston County63.1Muscogee County: 62.8 %Muscogee County62.8Lowndes County: 61.5 %Lowndes County61.5Gwinnett County: 60.5 %Gwinnett County60.5Richmond County: 59.2 %Richmond County59.2Wilkinson County: 59 %Wilkinson County59Clayton County: 55.4 %Clayton County55.4Dougherty County: 51.5 %Dougherty County51.5Floyd County: 51.2 %Floyd County51.2Cobb County: 50.4 %Cobb County50.4Bibb County: 50.3 %Bibb County50.3Walker County: 48.6 %Walker County48.6Paulding County: 42 %Paulding County42DeKalb County: 29.2 %DeKalb County29.2Fulton County: 27.6 %Fulton County27.6Chattooga County: 89.7 %Chattooga County89.7Columbia County: 89.3 %Columbia County89.3Sumter County: 89 %Sumter County89Dawson County: 88.5 %Dawson County88.5Charlton County: 87.2 %Charlton County87.2Pike County: 85.5 %Pike County85.5Murray County: 84 %Murray County84Douglas County: 80 %Douglas County80Washington County: 75.6 %Washington County75.6Rockdale County: 74.6 %Rockdale County74.6Glynn County: 74.3 %Glynn County74.3Clarke County: 66.6 %Clarke County66.6Coweta County: 66.1 %Coweta County66.1Hall County: 65.5 %Hall County65.5Henry County: 65.2 %Henry County65.2Coffee County: 65.1 %Coffee County65.1Chatham County: 64.1 %Chatham County64.1Houston County: 63.1 %Houston County63.1Muscogee County: 62.8 %Muscogee County62.8Lowndes County: 61.5 %Lowndes County61.5Gwinnett County: 60.5 %Gwinnett County60.5Richmond County: 59.2 %Richmond County59.2Wilkinson County: 59 %Wilkinson County59Clayton County: 55.4 %Clayton County55.4Dougherty County: 51.5 %Dougherty County51.5Floyd County: 51.2 %Floyd County51.2Cobb County: 50.4 %Cobb County50.4Bibb County: 50.3 %Bibb County50.3Walker County: 48.6 %Walker County48.6Paulding County: 42 %Paulding County42DeKalb County: 29.2 %DeKalb County29.2Fulton County: 27.6 %Fulton County27.6
%. Source: Invokely calculation with data from EPA. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Chattooga County89.7-0.9 pts
2Columbia County89.3-4.1 pts
3Sumter County89-7.3 pts
4Dawson County88.5-4.9 pts
5Charlton County87.2-2.7 pts
6Pike County85.5-4.4 pts
7Murray County84-3.9 pts
8Douglas County80-8 pts
9Washington County75.6+12.6 pts
10Rockdale County74.6-13 pts
11Glynn County74.3-3.7 pts
12Clarke County66.6+2.6 pts
13Coweta County66.1+0.1 pts
14Hall County65.5+34.8 pts
15Henry County65.2-0.7 pts
16Coffee County65.1-11.6 pts
17Chatham County64.1-1.1 pts
18Houston County63.1+7.5 pts
19Muscogee County62.8+3.2 pts
20Lowndes County61.5+15 pts
21Gwinnett County60.5+1.6 pts
22Richmond County59.2+1 pts
23Wilkinson County59+9.4 pts
24Clayton County55.4+6.6 pts
25Dougherty County51.5+8.8 pts
26Floyd County51.2+5.3 pts
27Cobb County50.4-0.3 pts
28Bibb County50.3-2.3 pts
29Walker County48.6+0.7 pts
30Paulding County42-5.7 pts
31DeKalb County29.2-1.2 pts
32Fulton County27.6-3.4 pts

Other periods

About this ranking

Days with a daily Air Quality Index of 0 to 50 (good) 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; both counts are stored with each value.

United States counties with air quality monitors only, about 1,000 of some 3,100 in recent years; a county without monitors has no value. The number of days with an AQI differs between counties because some monitors run only in the ozone season.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. 7 counties with data in other periods have no value for 2016 and are left out rather than filled from another source. Equal values share a rank.

How to cite

U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: good days 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 styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Environmental Protection Agency. (2026). EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts (Counties in Georgia by share of days with good air quality (US EPA AQI), 2016) [Data set]. Retrieved October 12, 2026, from https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual

MLA 9

EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts, Counties in Georgia by share of days with good air quality (US EPA AQI), 2016. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts. Counties in Georgia by share of days with good air quality (US EPA AQI), 2016. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts, Counties in Georgia by share of days with good air quality (US EPA AQI), 2016 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties (Accessed: 12 October 2026).

BibTeX
@misc{environmental_counties_in_georgia_by_2016,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts: Counties in Georgia by share of days with good air quality (US EPA AQI), 2016}},
  year = {2026},
  howpublished = {Data set},
  url = {https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: good days 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.},
}
RIS
TY  - DATA
AU  - U.S. Environmental Protection Agency
TI  - EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts: Counties in Georgia by share of days with good air quality (US EPA AQI), 2016
PY  - 2026
DA  - 2026/07/13
PB  - U.S. Environmental Protection Agency
DB  - Invokely
UR  - https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual
L2  - https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: good days 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.
ER  -
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Rank Counties in Georgia by share of days with good air quality (US EPA AQI) using official data, and cite the source.
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Questions

Which county has the highest share of days with good air quality (US EPA AQI)?

Chattooga County, with 89.7% in 2016, according to EPA.

Which county has the lowest share of days with good air quality (US EPA AQI)?

Fulton County, with 27.6% in 2016.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts. Retrieved 2026-10-12. 7 counties have no value for 2016 and are not ranked.

Share of days with good air quality (US EPA AQI): other rankings

Counties in Georgia: more rankings