Data / Median Air Quality Index (US EPA) / Doña Ana County

Median Air Quality Index (US EPA) in Doña Ana County

Median Air Quality Index (US EPA) in Doña Ana County was 61 in 2025, according to the U.S. Environmental Protection Agency. That is down 1 from 2024.

2025, index61
Change on 2024-1
Series high672000
Series low401980

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 Doña Ana County, 1980 to 2025

4050607019801987199420012008201520251980: 40 index1981: 46 index1982: 42 index1983: 44 index1984: 44 index1985: 43 index1986: 46 index1987: 47 index1988: 52 index1989: 55 index1990: 47 index1991: 47 index1992: 46 index1993: 46 index1994: 54 index1995: 57 index1996: 63 index1997: 58 index1998: 61 index1999: 64 index2000: 67 index2001: 61 index2002: 62 index2003: 64 index2004: 59 index2005: 57 index2006: 58 index2007: 58 index2008: 59 index2009: 58 index2010: 56 index2011: 59 index2012: 54 index2013: 58 index2014: 51 index2015: 55 index2016: 56 index2017: 58 index2018: 58 index2019: 54 index2020: 54 index2021: 56 index2022: 53 index2023: 52 index2024: 62 index2025: 61 index4050607019801996201220251980: 40 index1981: 46 index1982: 42 index1983: 44 index1984: 44 index1985: 43 index1986: 46 index1987: 47 index1988: 52 index1989: 55 index1990: 47 index1991: 47 index1992: 46 index1993: 46 index1994: 54 index1995: 57 index1996: 63 index1997: 58 index1998: 61 index1999: 64 index2000: 67 index2001: 61 index2002: 62 index2003: 64 index2004: 59 index2005: 57 index2006: 58 index2007: 58 index2008: 59 index2009: 58 index2010: 56 index2011: 59 index2012: 54 index2013: 58 index2014: 51 index2015: 55 index2016: 56 index2017: 58 index2018: 58 index2019: 54 index2020: 54 index2021: 56 index2022: 53 index2023: 52 index2024: 62 index2025: 61 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
202561
202462
202352
202253
202156
202054
201954
201858
201758
201656
201555
201451
201358
201254
201159
201056
200958
200859
200758
200658
200557
200459
200364
200262
200161
200067
199964
199861
199758
199663
199557
199454
199346
199246
199147
199047
198955
198852
198747
198646
198543
198444
198344
198242
198146
198040

Doña Ana County compared with nearby places

Bernalillo County: 58 indexCatron County: 45 indexChaves County: 29 indexDoña Ana County: 61 indexEddy County: 49 indexLea County: 44 indexLincoln County: 44 indexLos Alamos County: 13 indexLuna County: 17 indexRio Arriba County: 44 indexSandoval County: 44 indexSan Juan County: 47 indexSanta Fe County: 44 indexSocorro County: 17 indexTaos County: 16 indexValencia County: 44 index
  • Under 17
  • 17 to 44
  • 44 to 47
  • 47 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Doña Ana 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), Doña Ana 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), Doña Ana 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/dona-ana-county-new-mexico. 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), Doña Ana 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/dona-ana-county-new-mexico.

Harvard

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

Median Air Quality Index (US EPA) in Doña Ana County was 61 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 Doña Ana County?

67 in 2000, the highest value since 1980 in this series.

Related statistics for Doña Ana County

All statistics for Doña Ana County | Doña Ana County in figures