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

Median Air Quality Index (US EPA) in Pine County

Median Air Quality Index (US EPA) in Pine County was 23 in 2025, according to the U.S. Environmental Protection Agency. That is the 21st highest of 23 counties in 2025.

2025, index23
Rank21st of 23Counties in Minnesota ranked
Series high232025
Series low31999

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 Pine County, 1996 to 2025

051015202519961997199920002001200220251996: 7 index1997: 7 index1999: 3 index2000: 3 index2001: 3 index2002: 5 index2025: 23 index05101520251996200020251996: 7 index1997: 7 index1999: 3 index2000: 3 index2001: 3 index2002: 5 index2025: 23 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 7 values
Periodindex
202523
20025
20013
20003
19993
19977
19967

Pine County compared with nearby places

Anoka County: 38 indexBecker County: 38 indexBeltrami County: 36 indexBlue Earth County: 42 indexCarlton County: 33 indexCass County: 28 indexCook County: 16 indexCrow Wing County: 37 indexDakota County: 35 indexGoodhue County: 38 indexHennepin County: 45 indexLake County: 31 indexLyon County: 37 indexMille Lacs County: 34 indexOlmsted County: 39 indexPine County: 23 indexRamsey County: 34 indexSt. Louis County: 42 indexScott County: 38 indexStearns County: 37 indexWashington County: 34 indexWinona County: 21 indexWright County: 39 index
  • Under 32
  • 32 to 35
  • 35 to 37
  • 37 to 39
  • 39 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Pine 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), Pine County, 1996 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), Pine County, 1996 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/pine-county-minnesota. 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), Pine County, 1996 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/pine-county-minnesota.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Pine County, 1996 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/pine-county-minnesota (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), Pine County, 1996 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/pine-county-minnesota. 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), Pine County, 1996 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/pine-county-minnesota
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/pine-county-minnesota.
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 Pine County?

Median Air Quality Index (US EPA) in Pine County was 23 in 2025, according to the U.S. Environmental Protection Agency. That is the 21st highest of 23 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 Pine County?

23 in 2025, the highest value since 1996 in this series.

Related statistics for Pine County

All statistics for Pine County | Pine County in figures