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)

Chattooga County had the highest share of days with good air quality (US EPA AQI) of 32 counties in 2013, at 95.5%. Floyd County had the lowest, at 27.5%. The median was 56.8%. Source: EPA.

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Highest95.5Chattooga County
Lowest27.5Floyd County
Median56.832 counties

Map of counties, 2013

Bibb County: 45.5 %Charlton County: 86.3 %Chatham County: 60.8 %Chattooga County: 95.5 %Clarke County: 54 %Clayton County: 46.6 %Cobb County: 50.7 %Coffee County: 69.5 %Columbia County: 95.4 %Coweta County: 66.6 %Dawson County: 93.5 %DeKalb County: 31.2 %Dougherty County: 38.2 %Douglas County: 91.3 %Floyd County: 27.5 %Fulton County: 54.5 %Glynn County: 82.4 %Gwinnett County: 57.8 %Hall County: 42.4 %Henry County: 60.4 %Houston County: 47.3 %Lowndes County: 53.7 %Murray County: 87.9 %Muscogee County: 57.3 %Paulding County: 40 %Pike County: 91.9 %Richmond County: 54.1 %Rockdale County: 91.5 %Sumter County: 94.7 %Walker County: 44.5 %Washington County: 56.4 %Wilkinson County: 51.4 %
  • Under 45
  • 45 to 52
  • 52 to 57
  • 57 to 69
  • 69 to 91
  • 91 and over
  • No data
%, 2013. 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, 2013

Chattooga County: 95.5 %Chattooga County95.5Columbia County: 95.4 %Columbia County95.4Sumter County: 94.7 %Sumter County94.7Dawson County: 93.5 %Dawson County93.5Pike County: 91.9 %Pike County91.9Rockdale County: 91.5 %Rockdale County91.5Douglas County: 91.3 %Douglas County91.3Murray County: 87.9 %Murray County87.9Charlton County: 86.3 %Charlton County86.3Glynn County: 82.4 %Glynn County82.4Coffee County: 69.5 %Coffee County69.5Coweta County: 66.6 %Coweta County66.6Chatham County: 60.8 %Chatham County60.8Henry County: 60.4 %Henry County60.4Gwinnett County: 57.8 %Gwinnett County57.8Muscogee County: 57.3 %Muscogee County57.3Washington County: 56.4 %Washington County56.4Fulton County: 54.5 %Fulton County54.5Richmond County: 54.1 %Richmond County54.1Clarke County: 54 %Clarke County54Lowndes County: 53.7 %Lowndes County53.7Wilkinson County: 51.4 %Wilkinson County51.4Cobb County: 50.7 %Cobb County50.7Houston County: 47.3 %Houston County47.3Clayton County: 46.6 %Clayton County46.6Bibb County: 45.5 %Bibb County45.5Walker County: 44.5 %Walker County44.5Hall County: 42.4 %Hall County42.4Paulding County: 40 %Paulding County40Dougherty County: 38.2 %Dougherty County38.2DeKalb County: 31.2 %DeKalb County31.2Floyd County: 27.5 %Floyd County27.5Chattooga County: 95.5 %Chattooga County95.5Columbia County: 95.4 %Columbia County95.4Sumter County: 94.7 %Sumter County94.7Dawson County: 93.5 %Dawson County93.5Pike County: 91.9 %Pike County91.9Rockdale County: 91.5 %Rockdale County91.5Douglas County: 91.3 %Douglas County91.3Murray County: 87.9 %Murray County87.9Charlton County: 86.3 %Charlton County86.3Glynn County: 82.4 %Glynn County82.4Coffee County: 69.5 %Coffee County69.5Coweta County: 66.6 %Coweta County66.6Chatham County: 60.8 %Chatham County60.8Henry County: 60.4 %Henry County60.4Gwinnett County: 57.8 %Gwinnett County57.8Muscogee County: 57.3 %Muscogee County57.3Washington County: 56.4 %Washington County56.4Fulton County: 54.5 %Fulton County54.5Richmond County: 54.1 %Richmond County54.1Clarke County: 54 %Clarke County54Lowndes County: 53.7 %Lowndes County53.7Wilkinson County: 51.4 %Wilkinson County51.4Cobb County: 50.7 %Cobb County50.7Houston County: 47.3 %Houston County47.3Clayton County: 46.6 %Clayton County46.6Bibb County: 45.5 %Bibb County45.5Walker County: 44.5 %Walker County44.5Hall County: 42.4 %Hall County42.4Paulding County: 40 %Paulding County40Dougherty County: 38.2 %Dougherty County38.2DeKalb County: 31.2 %DeKalb County31.2Floyd County: 27.5 %Floyd County27.5
%. Source: Invokely calculation with data from EPA. Retrieved 2026-10-12.

Full ranking

RankCounties2013 (%)Change on 2012
1Chattooga County95.5+13.6 pts
2Columbia County95.4+14.6 pts
3Sumter County94.7+7.1 pts
4Dawson County93.5+2.6 pts
5Pike County91.9+12.3 pts
6Rockdale County91.5+13.4 pts
7Douglas County91.3+18.2 pts
8Murray County87.9+8.4 pts
9Charlton County86.3+5.3 pts
10Glynn County82.4-7.8 pts
11Coffee County69.5+9.5 pts
12Coweta County66.6+13.6 pts
13Chatham County60.8+12.2 pts
14Henry County60.4+13.6 pts
15Gwinnett County57.8+14.3 pts
16Muscogee County57.3+7.8 pts
17Washington County56.4+1.3 pts
18Fulton County54.5+24.7 pts
19Richmond County54.1+11.8 pts
20Clarke County54+7.8 pts
21Lowndes County53.7+35.4 pts
22Wilkinson County51.4+13.8 pts
23Cobb County50.7+9.9 pts
24Houston County47.3+12.1 pts
25Clayton County46.6+6.1 pts
26Bibb County45.5+11.6 pts
27Walker County44.5+13.2 pts
28Hall County42.4+5.5 pts
29Paulding County40+11.6 pts
30Dougherty County38.2-10.1 pts
31DeKalb County31.2+7.4 pts
32Floyd County27.5+22.6 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 2013 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), 2013) [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), 2013. 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?period=2013. 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), 2013. 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?period=2013.

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), 2013 [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?period=2013 (Accessed: 12 October 2026).

BibTeX
@misc{environmental_counties_in_georgia_by_2013,
  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), 2013}},
  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?period=2013. 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), 2013
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?period=2013
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties?period=2013.
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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Questions

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

Chattooga County, with 95.5% in 2013, according to EPA.

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

Floyd County, with 27.5% in 2013.

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 2013 and are not ranked.

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

Counties in Georgia: more rankings