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)

Sumter County had the highest share of days with good air quality (US EPA AQI) of 32 counties in 2014, at 93.9%. Floyd County had the lowest, at 17.1%. The median was 47.9%. Source: EPA.

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Highest93.9Sumter County
Lowest17.1Floyd County
Median47.932 counties

Map of counties, 2014

Bibb County: 35.6 %Charlton County: 81.9 %Chatham County: 43.2 %Chattooga County: 92.7 %Clarke County: 46.1 %Clayton County: 37.7 %Cobb County: 44.3 %Coffee County: 55.7 %Columbia County: 89.2 %Coweta County: 59.7 %Dawson County: 89 %DeKalb County: 23.6 %Dougherty County: 35.4 %Douglas County: 81.5 %Floyd County: 17.1 %Fulton County: 44.8 %Glynn County: 63.9 %Gwinnett County: 52.3 %Hall County: 35.8 %Henry County: 52.7 %Houston County: 33 %Lowndes County: 48.4 %Murray County: 84.2 %Muscogee County: 49.6 %Paulding County: 34.3 %Pike County: 87.2 %Richmond County: 44.3 %Rockdale County: 85.1 %Sumter County: 93.9 %Walker County: 43.8 %Washington County: 47.4 %Wilkinson County: 40.5 %
  • Under 36
  • 36 to 44
  • 44 to 48
  • 48 to 58
  • 58 to 85
  • 85 and over
  • No data
%, 2014. 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, 2014

Sumter County: 93.9 %Sumter County93.9Chattooga County: 92.7 %Chattooga County92.7Columbia County: 89.2 %Columbia County89.2Dawson County: 89 %Dawson County89Pike County: 87.2 %Pike County87.2Rockdale County: 85.1 %Rockdale County85.1Murray County: 84.2 %Murray County84.2Charlton County: 81.9 %Charlton County81.9Douglas County: 81.5 %Douglas County81.5Glynn County: 63.9 %Glynn County63.9Coweta County: 59.7 %Coweta County59.7Coffee County: 55.7 %Coffee County55.7Henry County: 52.7 %Henry County52.7Gwinnett County: 52.3 %Gwinnett County52.3Muscogee County: 49.6 %Muscogee County49.6Lowndes County: 48.4 %Lowndes County48.4Washington County: 47.4 %Washington County47.4Clarke County: 46.1 %Clarke County46.1Fulton County: 44.8 %Fulton County44.8Cobb County: 44.3 %Cobb County44.3Richmond County: 44.3 %Richmond County44.3Walker County: 43.8 %Walker County43.8Chatham County: 43.2 %Chatham County43.2Wilkinson County: 40.5 %Wilkinson County40.5Clayton County: 37.7 %Clayton County37.7Hall County: 35.8 %Hall County35.8Bibb County: 35.6 %Bibb County35.6Dougherty County: 35.4 %Dougherty County35.4Paulding County: 34.3 %Paulding County34.3Houston County: 33 %Houston County33DeKalb County: 23.6 %DeKalb County23.6Floyd County: 17.1 %Floyd County17.1Sumter County: 93.9 %Sumter County93.9Chattooga County: 92.7 %Chattooga County92.7Columbia County: 89.2 %Columbia County89.2Dawson County: 89 %Dawson County89Pike County: 87.2 %Pike County87.2Rockdale County: 85.1 %Rockdale County85.1Murray County: 84.2 %Murray County84.2Charlton County: 81.9 %Charlton County81.9Douglas County: 81.5 %Douglas County81.5Glynn County: 63.9 %Glynn County63.9Coweta County: 59.7 %Coweta County59.7Coffee County: 55.7 %Coffee County55.7Henry County: 52.7 %Henry County52.7Gwinnett County: 52.3 %Gwinnett County52.3Muscogee County: 49.6 %Muscogee County49.6Lowndes County: 48.4 %Lowndes County48.4Washington County: 47.4 %Washington County47.4Clarke County: 46.1 %Clarke County46.1Fulton County: 44.8 %Fulton County44.8Cobb County: 44.3 %Cobb County44.3Richmond County: 44.3 %Richmond County44.3Walker County: 43.8 %Walker County43.8Chatham County: 43.2 %Chatham County43.2Wilkinson County: 40.5 %Wilkinson County40.5Clayton County: 37.7 %Clayton County37.7Hall County: 35.8 %Hall County35.8Bibb County: 35.6 %Bibb County35.6Dougherty County: 35.4 %Dougherty County35.4Paulding County: 34.3 %Paulding County34.3Houston County: 33 %Houston County33DeKalb County: 23.6 %DeKalb County23.6Floyd County: 17.1 %Floyd County17.1
%. Source: Invokely calculation with data from EPA. Retrieved 2026-10-12.

Full ranking

RankCounties2014 (%)Change on 2013
1Sumter County93.9-0.8 pts
2Chattooga County92.7-2.8 pts
3Columbia County89.2-6.2 pts
4Dawson County89-4.5 pts
5Pike County87.2-4.7 pts
6Rockdale County85.1-6.4 pts
7Murray County84.2-3.7 pts
8Charlton County81.9-4.4 pts
9Douglas County81.5-9.8 pts
10Glynn County63.9-18.5 pts
11Coweta County59.7-6.9 pts
12Coffee County55.7-13.8 pts
13Henry County52.7-7.7 pts
14Gwinnett County52.3-5.5 pts
15Muscogee County49.6-7.7 pts
16Lowndes County48.4-5.3 pts
17Washington County47.4-9 pts
18Clarke County46.1-7.9 pts
19Fulton County44.8-9.7 pts
20Cobb County44.3-6.4 pts
20Richmond County44.3-9.8 pts
22Walker County43.8-0.7 pts
23Chatham County43.2-17.6 pts
24Wilkinson County40.5-10.9 pts
25Clayton County37.7-8.9 pts
26Hall County35.8-6.6 pts
27Bibb County35.6-9.9 pts
28Dougherty County35.4-2.8 pts
29Paulding County34.3-5.7 pts
30Houston County33-14.3 pts
31DeKalb County23.6-7.6 pts
32Floyd County17.1-10.4 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 2014 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), 2014) [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), 2014. 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=2014. 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), 2014. 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=2014.

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), 2014 [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=2014 (Accessed: 12 October 2026).

BibTeX
@misc{environmental_counties_in_georgia_by_2014,
  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), 2014}},
  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=2014. 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), 2014
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=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties?period=2014.
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)?

Sumter County, with 93.9% in 2014, according to EPA.

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

Floyd County, with 17.1% in 2014.

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 2014 and are not ranked.

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

Counties in Georgia: more rankings