Data / Median Air Quality Index (US EPA) / Jackson County

Median Air Quality Index (US EPA) in Jackson County

Median Air Quality Index (US EPA) in Jackson County was 47 in 2025, according to the U.S. Environmental Protection Agency. That is up 1 from 2024. That is the 2nd highest of 21 counties in 2025.

2025, index47
Change on 2024+1
Rank2nd of 21Counties in Missouri ranked
Series high571999
Series low91981

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 Jackson County, 1980 to 2025

010203040506019801987199420012008201520251980: 38 index1981: 9 index1982: 20 index1983: 11 index1984: 33 index1985: 35 index1986: 31 index1987: 25 index1988: 27 index1989: 36 index1990: 34 index1991: 38 index1992: 32 index1993: 31 index1994: 32 index1995: 41 index1996: 39 index1997: 32 index1998: 35 index1999: 57 index2000: 56 index2001: 56 index2002: 55 index2003: 55 index2004: 54 index2005: 57 index2006: 56 index2007: 56 index2008: 54 index2009: 44 index2010: 55 index2011: 54 index2012: 53 index2013: 52 index2014: 49 index2015: 47 index2016: 47 index2017: 52 index2018: 44 index2019: 49 index2020: 51 index2021: 53 index2022: 52 index2023: 52 index2024: 46 index2025: 47 index020406019801996201220251980: 38 index1981: 9 index1982: 20 index1983: 11 index1984: 33 index1985: 35 index1986: 31 index1987: 25 index1988: 27 index1989: 36 index1990: 34 index1991: 38 index1992: 32 index1993: 31 index1994: 32 index1995: 41 index1996: 39 index1997: 32 index1998: 35 index1999: 57 index2000: 56 index2001: 56 index2002: 55 index2003: 55 index2004: 54 index2005: 57 index2006: 56 index2007: 56 index2008: 54 index2009: 44 index2010: 55 index2011: 54 index2012: 53 index2013: 52 index2014: 49 index2015: 47 index2016: 47 index2017: 52 index2018: 44 index2019: 49 index2020: 51 index2021: 53 index2022: 52 index2023: 52 index2024: 46 index2025: 47 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 46 values
Periodindex
202547
202446
202352
202252
202153
202051
201949
201844
201752
201647
201547
201449
201352
201253
201154
201055
200944
200854
200756
200656
200557
200454
200355
200255
200156
200056
199957
199835
199732
199639
199541
199432
199331
199232
199138
199034
198936
198827
198725
198631
198535
198433
198311
198220
19819
198038

Jackson County compared with nearby places

Andrew County: 40 indexBoone County: 37 indexBuchanan County: 46 indexCallaway County: 41 indexCass County: 41 indexCedar County: 39 indexClay County: 42 indexClinton County: 41 indexGreene County: 45 indexJackson County: 47 indexJasper County: 38 indexJefferson County: 42 indexLincoln County: 41 indexMonroe County: 35 indexPerry County: 41 indexSt. Charles County: 40 indexSte. Genevieve County: 41 indexSt. Louis County: 43 indexStoddard County: 21 indexTaney County: 28 indexSt. Louis city: 55 index
  • Under 38
  • 38 to 41
  • 41 to 43
  • 43 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Jackson 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), Jackson County, 1980 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), Jackson County, 1980 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/jackson-county-missouri. 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), Jackson County, 1980 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/jackson-county-missouri.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Jackson County, 1980 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/jackson-county-missouri (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), Jackson County, 1980 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/jackson-county-missouri. 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), Jackson County, 1980 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/jackson-county-missouri
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/jackson-county-missouri.
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 Jackson County?

Median Air Quality Index (US EPA) in Jackson County was 47 in 2025, according to the U.S. Environmental Protection Agency. That is up 1 from 2024. That is the 2nd highest of 21 counties in 2025.

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 Jackson County?

57 in 1999, the highest value since 1980 in this series.

Related statistics for Jackson County

All statistics for Jackson County | Jackson County in figures