Median Air Quality Index (US EPA) in Richmond County

Median Air Quality Index (US EPA) in Richmond County was 52 in 2025, according to the U.S. Environmental Protection Agency. That is up 1 from 2024.

2025, index52
Change on 2024+1
Series high661999
Series low341992

Next release: Tuesday, 13 July 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Median Air Quality Index (US EPA) in Richmond County, 1989 to 2025

304050607019891995200120072013201920251989: 44 index1990: 42 index1991: 39 index1992: 34 index1993: 46 index1994: 44 index1995: 45 index1996: 43 index1997: 46 index1998: 54 index1999: 66 index2000: 63 index2001: 54 index2002: 54 index2003: 51 index2004: 61 index2005: 61 index2006: 62 index2007: 62 index2008: 58 index2009: 53 index2010: 54 index2011: 55 index2012: 52 index2013: 48 index2014: 52 index2015: 46 index2016: 46 index2017: 48 index2018: 47 index2019: 52 index2020: 51 index2021: 51 index2022: 49 index2023: 51 index2024: 51 index2025: 52 index304050607019892002201520251989: 44 index1990: 42 index1991: 39 index1992: 34 index1993: 46 index1994: 44 index1995: 45 index1996: 43 index1997: 46 index1998: 54 index1999: 66 index2000: 63 index2001: 54 index2002: 54 index2003: 51 index2004: 61 index2005: 61 index2006: 62 index2007: 62 index2008: 58 index2009: 53 index2010: 54 index2011: 55 index2012: 52 index2013: 48 index2014: 52 index2015: 46 index2016: 46 index2017: 48 index2018: 47 index2019: 52 index2020: 51 index2021: 51 index2022: 49 index2023: 51 index2024: 51 index2025: 52 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 37 values
Periodindex
202552
202451
202351
202249
202151
202051
201952
201847
201748
201646
201546
201452
201348
201252
201155
201054
200953
200858
200762
200662
200561
200461
200351
200254
200154
200063
199966
199854
199746
199643
199545
199444
199346
199234
199139
199042
198944

Richmond County compared with nearby places

Bibb County: 52 indexCharlton County: 27 indexChatham County: 47 indexClarke County: 46 indexClayton County: 48 indexCobb County: 35 indexCoffee County: 44 indexDawson County: 34 indexDeKalb County: 47 indexDougherty County: 46 indexDouglas County: 39 indexFloyd County: 38 indexFulton County: 49 indexGlynn County: 41 indexGwinnett County: 47 indexHall County: 46 indexHenry County: 39 indexHouston County: 46 indexLowndes County: 49 indexMurray County: 39 indexMuscogee County: 48 indexPike County: 38 indexRichmond County: 52 indexRockdale County: 36 indexWalker County: 48 indexWashington County: 46 index
  • Under 38
  • 38 to 44
  • 44 to 46
  • 46 to 48
  • 48 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Richmond County is outlined. Same source and period for every area shown. Source: U.S. Environmental Protection Agency. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

Median of the daily Air Quality Index (AQI) values of a US county over the days of the year with an AQI, from the EPA AirData annual summaries.

More on how it is measured
  • The daily county AQI is the highest AQI among the monitors and pollutants reported that day (ozone, PM2.5, PM10, carbon monoxide and nitrogen dioxide).
  • Lower is cleaner: 0 to 50 is good, 51 to 100 moderate and above 100 unhealthy for sensitive groups.

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.

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How to cite

U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. 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: median daily AQI (Median Air Quality Index (US EPA), Richmond County, 1989 to 2025) [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: median daily AQI, Median Air Quality Index (US EPA), Richmond County, 1989 to 2025. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/en/median-air-quality-index/richmond-county-georgia. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: median daily AQI. Median Air Quality Index (US EPA), Richmond County, 1989 to 2025. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/en/median-air-quality-index/richmond-county-georgia.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Richmond County, 1989 to 2025 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/richmond-county-georgia (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_2025,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Richmond County, 1989 to 2025}},
  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/en/median-air-quality-index/richmond-county-georgia. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. 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: median daily AQI: Median Air Quality Index (US EPA), Richmond County, 1989 to 2025
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/en/median-air-quality-index/richmond-county-georgia
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/richmond-county-georgia.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
ER  - 
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Questions

What is the median Air Quality Index (US EPA) in Richmond County?

Median Air Quality Index (US EPA) in Richmond County was 52 in 2025, according to the U.S. Environmental Protection Agency. That is up 1 from 2024.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: median daily AQI. Retrieved by Invokely on 2026-10-12.

What was the highest median Air Quality Index (US EPA) in Richmond County?

66 in 1999, the highest value since 1989 in this series.

Related statistics for Richmond County

All statistics for Richmond County | Richmond County in figures