Median Air Quality Index (US EPA) in Morgan County

Median Air Quality Index (US EPA) in Morgan County was 35 in 2025, according to the U.S. Environmental Protection Agency. That is down 3 from 2024.

2025, index35
Change on 2024-3
Series high481995
Series low311993

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 Morgan County, 1993 to 2025

303540455019931998200320082013201820251993: 31 index1994: 44 index1995: 48 index1996: 43 index1997: 41 index1998: 44 index1999: 47 index2000: 43 index2001: 43 index2002: 40 index2003: 39 index2004: 38 index2005: 39 index2006: 39 index2007: 41 index2008: 41 index2009: 37 index2010: 41 index2011: 38 index2012: 39 index2013: 35 index2014: 35 index2015: 37 index2016: 37 index2017: 37 index2018: 34 index2019: 36 index2020: 33 index2021: 35 index2022: 35 index2023: 38 index2024: 38 index2025: 35 index303540455019932004201520251993: 31 index1994: 44 index1995: 48 index1996: 43 index1997: 41 index1998: 44 index1999: 47 index2000: 43 index2001: 43 index2002: 40 index2003: 39 index2004: 38 index2005: 39 index2006: 39 index2007: 41 index2008: 41 index2009: 37 index2010: 41 index2011: 38 index2012: 39 index2013: 35 index2014: 35 index2015: 37 index2016: 37 index2017: 37 index2018: 34 index2019: 36 index2020: 33 index2021: 35 index2022: 35 index2023: 38 index2024: 38 index2025: 35 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 33 values
Periodindex
202535
202438
202338
202235
202135
202033
201936
201834
201737
201637
201537
201435
201335
201239
201138
201041
200937
200841
200741
200639
200539
200438
200339
200240
200143
200043
199947
199844
199741
199643
199548
199444
199331

Morgan County compared with nearby places

Bell County: 42 indexBoone County: 38 indexBoyd County: 39 indexBullitt County: 39 indexCampbell County: 39 indexCarter County: 36 indexChristian County: 41 indexDaviess County: 43 indexEdmonson County: 36 indexFayette County: 40 indexGreenup County: 36 indexHancock County: 43 indexHardin County: 43 indexJefferson County: 49 indexJessamine County: 41 indexLivingston County: 40 indexMcCracken County: 41 indexMorgan County: 35 indexOldham County: 39 indexPerry County: 36 indexPike County: 34 indexPulaski County: 40 indexSimpson County: 39 indexWarren County: 39 indexWashington County: 38 index
  • Under 36
  • 36 to 39
  • 39 to 40
  • 40 to 41
  • 41 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Morgan 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), Morgan County, 1993 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), Morgan County, 1993 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/morgan-county-kentucky. 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), Morgan County, 1993 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/morgan-county-kentucky.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Morgan County, 1993 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/morgan-county-kentucky (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), Morgan County, 1993 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/morgan-county-kentucky. 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), Morgan County, 1993 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/morgan-county-kentucky
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/morgan-county-kentucky.
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 Morgan County?

Median Air Quality Index (US EPA) in Morgan County was 35 in 2025, according to the U.S. Environmental Protection Agency. That is down 3 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 Morgan County?

48 in 1995, the highest value since 1993 in this series.

Related statistics for Morgan County

All statistics for Morgan County | Morgan County in figures