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

Median Air Quality Index (US EPA) in Cochise County

Median Air Quality Index (US EPA) in Cochise County was 45 in 2025, according to the U.S. Environmental Protection Agency. That is down 3 from 2024. That is the 9th highest of 13 counties in 2025.

2025, index45
Change on 2024-3
Rank9th of 13Counties in Arizona ranked
Series high761986
Series low31983

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

Get an email when a new figure is out or this one is revised.
Keep it in a collection in your library.

Median Air Quality Index (US EPA) in Cochise County, 1980 to 2025

02040608019801987199420012008201520251980: 30 index1981: 34 index1982: 26 index1983: 3 index1984: 3 index1985: 34 index1986: 76 index1987: 50 index1988: 34 index1989: 44 index1990: 44 index1991: 45 index1992: 43 index1993: 44 index1994: 46 index1995: 45 index1996: 44 index1997: 44 index1998: 47 index1999: 47 index2000: 46 index2001: 44 index2002: 47 index2003: 49 index2004: 46 index2005: 47 index2006: 47 index2007: 46 index2008: 47 index2009: 46 index2010: 45 index2011: 48 index2012: 50 index2013: 49 index2014: 48 index2015: 44 index2016: 44 index2017: 45 index2018: 45 index2019: 46 index2020: 45 index2021: 45 index2022: 44 index2023: 44 index2024: 48 index2025: 45 index02040608019801996201220251980: 30 index1981: 34 index1982: 26 index1983: 3 index1984: 3 index1985: 34 index1986: 76 index1987: 50 index1988: 34 index1989: 44 index1990: 44 index1991: 45 index1992: 43 index1993: 44 index1994: 46 index1995: 45 index1996: 44 index1997: 44 index1998: 47 index1999: 47 index2000: 46 index2001: 44 index2002: 47 index2003: 49 index2004: 46 index2005: 47 index2006: 47 index2007: 46 index2008: 47 index2009: 46 index2010: 45 index2011: 48 index2012: 50 index2013: 49 index2014: 48 index2015: 44 index2016: 44 index2017: 45 index2018: 45 index2019: 46 index2020: 45 index2021: 45 index2022: 44 index2023: 44 index2024: 48 index2025: 45 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
202545
202448
202344
202244
202145
202045
201946
201845
201745
201644
201544
201448
201349
201250
201148
201045
200946
200847
200746
200647
200547
200446
200349
200247
200144
200046
199947
199847
199744
199644
199545
199446
199344
199243
199145
199044
198944
198834
198750
198676
198534
19843
19833
198226
198134
198030

Cochise County compared with nearby places

Apache County: 33 indexCochise County: 45 indexCoconino County: 46 indexGila County: 47 indexLa Paz County: 44 indexMaricopa County: 73 indexMohave County: 17 indexNavajo County: 13 indexPima County: 54 indexPinal County: 67 indexSanta Cruz County: 49 indexYavapai County: 47 indexYuma County: 48 index
  • Under 37
  • 37 to 46
  • 46 to 47
  • 47 to 52
  • 52 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Cochise 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.

Report a problem with this figure

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), Cochise 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), Cochise 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/cochise-county-arizona. 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), Cochise 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/cochise-county-arizona.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Cochise 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/cochise-county-arizona (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), Cochise 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/cochise-county-arizona. 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), Cochise 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/cochise-county-arizona
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/cochise-county-arizona.
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  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

What is the latest median Air Quality Index (US EPA) in Cochise County? Cite the source.
get_value {"indicator":"aqi_median","place":"us-county-04003"}
GET https://invokely.ai/api/v1/value?indicator=aqi_median&place=us-county-04003

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

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

Median Air Quality Index (US EPA) in Cochise County was 45 in 2025, according to the U.S. Environmental Protection Agency. That is down 3 from 2024. That is the 9th highest of 13 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 Cochise County?

76 in 1986, the highest value since 1980 in this series.

Related statistics for Cochise County

All statistics for Cochise County | Cochise County in figures