Data / Median Air Quality Index (US EPA) / Charles City County

Median Air Quality Index (US EPA) in Charles City County

Median Air Quality Index (US EPA) in Charles City County was 35 in 2025, according to the U.S. Environmental Protection Agency. That is down 1 from 2024.

2025, index35
Change on 2024-1
Series high471988
Series low312020

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 Charles City County, 1988 to 2025

303540455019881994200020062012201820251988: 47 index1989: 40 index1990: 47 index1991: 45 index1992: 45 index1993: 46 index1994: 40 index1995: 41 index1996: 38 index1997: 41 index1998: 42 index1999: 43 index2000: 42 index2001: 43 index2002: 46 index2003: 42 index2004: 43 index2005: 43 index2006: 43 index2007: 44 index2008: 41 index2009: 36 index2010: 41 index2011: 38 index2012: 37 index2013: 32 index2014: 37 index2015: 34 index2016: 32 index2017: 34 index2018: 33 index2019: 36 index2020: 31 index2021: 34 index2022: 33 index2023: 40 index2024: 36 index2025: 35 index303540455019882001201420251988: 47 index1989: 40 index1990: 47 index1991: 45 index1992: 45 index1993: 46 index1994: 40 index1995: 41 index1996: 38 index1997: 41 index1998: 42 index1999: 43 index2000: 42 index2001: 43 index2002: 46 index2003: 42 index2004: 43 index2005: 43 index2006: 43 index2007: 44 index2008: 41 index2009: 36 index2010: 41 index2011: 38 index2012: 37 index2013: 32 index2014: 37 index2015: 34 index2016: 32 index2017: 34 index2018: 33 index2019: 36 index2020: 31 index2021: 34 index2022: 33 index2023: 40 index2024: 36 index2025: 35 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 38 values
Periodindex
202535
202436
202340
202233
202134
202031
201936
201833
201734
201632
201534
201437
201332
201237
201138
201041
200936
200841
200744
200643
200543
200443
200342
200246
200143
200042
199943
199842
199741
199638
199541
199440
199346
199245
199145
199047
198940
198847

Charles City County compared with nearby places

Albemarle County: 38 indexArlington County: 37 indexCaroline County: 35 indexCarroll County: 7 indexCharles City County: 35 indexChesterfield County: 39 indexFairfax County: 42 indexFauquier County: 34 indexFrederick County: 39 indexGiles County: 37 indexHanover County: 36 indexHenrico County: 40 indexLoudoun County: 40 indexMadison County: 40 indexPrince Edward County: 33 indexPrince William County: 35 indexRoanoke County: 37 indexRockbridge County: 36 indexRockingham County: 39 indexStafford County: 35 indexWythe County: 39 indexBristol city: 34 indexHampton city: 38 indexHopewell city: 6 indexLynchburg city: 30 indexNorfolk city: 33 indexRichmond city: 36 indexSalem city: 31 indexSuffolk city: 38 indexVirginia Beach city: 34 index
  • Under 33
  • 33 to 35
  • 35 to 36
  • 36 to 38
  • 38 to 39
  • 39 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Charles City 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), Charles City County, 1988 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), Charles City County, 1988 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/charles-city-county-virginia. 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), Charles City County, 1988 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/charles-city-county-virginia.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Charles City County, 1988 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/charles-city-county-virginia (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), Charles City County, 1988 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/charles-city-county-virginia. 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), Charles City County, 1988 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/charles-city-county-virginia
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/charles-city-county-virginia.
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 Charles City County?

Median Air Quality Index (US EPA) in Charles City County was 35 in 2025, according to the U.S. Environmental Protection Agency. That is down 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 Charles City County?

47 in 1988, the highest value since 1988 in this series.

Related statistics for Charles City County

All statistics for Charles City County | Charles City County in figures