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)

Spalding County had the highest share of days with good air quality (US EPA AQI) of 35 counties in 2006, at 100%. Fulton County had the lowest, at 6%. The median was 26.1%. Source: EPA.

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Highest100Spalding County
Lowest6Fulton County
Median26.135 counties

Map of counties, 2006

Bibb County: 20.1 %Charlton County: 58 %Chatham County: 22.5 %Chattooga County: 73.8 %Clarke County: 24.1 %Clayton County: 16 %Cobb County: 38.4 %Coffee County: 13.8 %Columbia County: 68.2 %Coweta County: 25.6 %Dawson County: 60.6 %DeKalb County: 15.3 %Dougherty County: 24.1 %Douglas County: 54.9 %Fayette County: 57.8 %Floyd County: 20.5 %Fulton County: 6 %Glynn County: 64.5 %Gwinnett County: 24.1 %Hall County: 27.3 %Henry County: 26.1 %Houston County: 18.3 %Lowndes County: 27.9 %Murray County: 51.3 %Muscogee County: 22.7 %Paulding County: 30.7 %Pike County: 64.1 %Richmond County: 21.2 %Rockdale County: 69.9 %Spalding County: 100 %Sumter County: 63 %Walker County: 20.6 %Walton County: 31.8 %Washington County: 21.3 %Wilkinson County: 18.3 %
  • Under 20
  • 20 to 23
  • 23 to 26
  • 26 to 47
  • 47 to 63
  • 63 and over
  • No data
%, 2006. 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, 2006

Spalding County: 100 %Spalding County100Chattooga County: 73.8 %Chattooga County73.8Rockdale County: 69.9 %Rockdale County69.9Columbia County: 68.2 %Columbia County68.2Glynn County: 64.5 %Glynn County64.5Pike County: 64.1 %Pike County64.1Sumter County: 63 %Sumter County63Dawson County: 60.6 %Dawson County60.6Charlton County: 58 %Charlton County58Fayette County: 57.8 %Fayette County57.8Douglas County: 54.9 %Douglas County54.9Murray County: 51.3 %Murray County51.3Cobb County: 38.4 %Cobb County38.4Walton County: 31.8 %Walton County31.8Paulding County: 30.7 %Paulding County30.7Lowndes County: 27.9 %Lowndes County27.9Hall County: 27.3 %Hall County27.3Henry County: 26.1 %Henry County26.1Coweta County: 25.6 %Coweta County25.6Clarke County: 24.1 %Clarke County24.1Dougherty County: 24.1 %Dougherty County24.1Gwinnett County: 24.1 %Gwinnett County24.1Muscogee County: 22.7 %Muscogee County22.7Chatham County: 22.5 %Chatham County22.5Washington County: 21.3 %Washington County21.3Richmond County: 21.2 %Richmond County21.2Walker County: 20.6 %Walker County20.6Floyd County: 20.5 %Floyd County20.5Bibb County: 20.1 %Bibb County20.1Houston County: 18.3 %Houston County18.3Wilkinson County: 18.3 %Wilkinson County18.3Clayton County: 16 %Clayton County16DeKalb County: 15.3 %DeKalb County15.3Coffee County: 13.8 %Coffee County13.8Fulton County: 6 %Fulton County6Spalding County: 100 %Spalding County100Chattooga County: 73.8 %Chattooga County73.8Rockdale County: 69.9 %Rockdale County69.9Columbia County: 68.2 %Columbia County68.2Glynn County: 64.5 %Glynn County64.5Pike County: 64.1 %Pike County64.1Sumter County: 63 %Sumter County63Dawson County: 60.6 %Dawson County60.6Charlton County: 58 %Charlton County58Fayette County: 57.8 %Fayette County57.8Douglas County: 54.9 %Douglas County54.9Murray County: 51.3 %Murray County51.3Cobb County: 38.4 %Cobb County38.4Walton County: 31.8 %Walton County31.8Paulding County: 30.7 %Paulding County30.7Lowndes County: 27.9 %Lowndes County27.9Hall County: 27.3 %Hall County27.3Henry County: 26.1 %Henry County26.1Coweta County: 25.6 %Coweta County25.6Clarke County: 24.1 %Clarke County24.1Dougherty County: 24.1 %Dougherty County24.1Gwinnett County: 24.1 %Gwinnett County24.1Muscogee County: 22.7 %Muscogee County22.7Chatham County: 22.5 %Chatham County22.5Washington County: 21.3 %Washington County21.3Richmond County: 21.2 %Richmond County21.2Walker County: 20.6 %Walker County20.6Floyd County: 20.5 %Floyd County20.5Bibb County: 20.1 %Bibb County20.1Houston County: 18.3 %Houston County18.3Wilkinson County: 18.3 %Wilkinson County18.3Clayton County: 16 %Clayton County16DeKalb County: 15.3 %DeKalb County15.3Coffee County: 13.8 %Coffee County13.8Fulton County: 6 %Fulton County6
%. Source: Invokely calculation with data from EPA. Retrieved 2026-10-12.

Full ranking

RankCounties2006 (%)Change on 2005
1Spalding County100+1.7 pts
2Chattooga County73.8+1 pts
3Rockdale County69.9-3.3 pts
4Columbia County68.2-15.8 pts
5Glynn County64.5+2.2 pts
6Pike County64.1-10.3 pts
7Sumter County63-8.7 pts
8Dawson County60.6-9.2 pts
9Charlton County58-12 pts
10Fayette County57.8-0.2 pts
11Douglas County54.9-3.3 pts
12Murray County51.3-5.7 pts
13Cobb County38.4-2.2 pts
14Walton County31.8+3.5 pts
15Paulding County30.7+1.4 pts
16Lowndes County27.9-4.8 pts
17Hall County27.3+5 pts
18Henry County26.1-2.4 pts
19Coweta County25.6-6.1 pts
20Clarke County24.1-3.6 pts
20Dougherty County24.1-5.2 pts
20Gwinnett County24.1-3 pts
23Muscogee County22.7-5 pts
24Chatham County22.5-2.7 pts
25Washington County21.3-7.7 pts
26Richmond County21.2+2 pts
27Walker County20.6+6.3 pts
28Floyd County20.5+6.5 pts
29Bibb County20.1-5.8 pts
30Houston County18.3-6.7 pts
30Wilkinson County18.3+3.6 pts
32Clayton County16-1 pts
33DeKalb County15.3+0.2 pts
34Coffee County13.8-28.6 pts
35Fulton County6-6.3 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. 4 counties with data in other periods have no value for 2006 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), 2006) [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), 2006. 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=2006. 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), 2006. 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=2006.

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), 2006 [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=2006 (Accessed: 12 October 2026).

BibTeX
@misc{environmental_counties_in_georgia_by_2006,
  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), 2006}},
  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=2006. 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), 2006
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=2006
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/georgia-counties?period=2006.
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)?

Spalding County, with 100% in 2006, according to EPA.

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

Fulton County, with 6% in 2006.

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. 4 counties have no value for 2006 and are not ranked.

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

Counties in Georgia: more rankings