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

Median Air Quality Index (US EPA) in Rockland County

Median Air Quality Index (US EPA) in Rockland County was 37 in 2025, according to the U.S. Environmental Protection Agency. That is unchanged from 2024.

2025, index37
Change on 20240
Series high442011
Series low111995

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 Rockland County, 1995 to 2025

102030405019951998201120142017202020251995: 11 index1996: 18 index1997: 15 index1998: 17 index2009: 35 index2010: 42 index2011: 44 index2012: 42 index2013: 43 index2014: 41 index2015: 42 index2016: 39 index2017: 38 index2018: 38 index2019: 39 index2020: 36 index2021: 37 index2022: 38 index2023: 38 index2024: 37 index2025: 37 index102030405019952012201920251995: 11 index1996: 18 index1997: 15 index1998: 17 index2009: 35 index2010: 42 index2011: 44 index2012: 42 index2013: 43 index2014: 41 index2015: 42 index2016: 39 index2017: 38 index2018: 38 index2019: 39 index2020: 36 index2021: 37 index2022: 38 index2023: 38 index2024: 37 index2025: 37 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 21 values
Periodindex
202537
202437
202338
202238
202137
202036
201939
201838
201738
201639
201542
201441
201343
201242
201144
201042
200935
199817
199715
199618
199511

Rockland County compared with nearby places

Albany County: 39 indexBronx County: 45 indexChautauqua County: 36 indexDutchess County: 34 indexErie County: 44 indexEssex County: 41 indexHamilton County: 34 indexJefferson County: 34 indexKings County: 39 indexMonroe County: 39 indexNassau County: 29 indexNew York County: 50 indexNiagara County: 34 indexOneida County: 27 indexOnondaga County: 36 indexOrange County: 27 indexOswego County: 34 indexPutnam County: 33 indexQueens County: 44 indexRichmond County: 41 indexRockland County: 37 indexSaratoga County: 34 indexSteuben County: 38 indexSuffolk County: 41 indexTompkins County: 35 indexWayne County: 33 indexWestchester County: 38 index
  • Under 34
  • 34 to 38
  • 38 to 41
  • 41 and over
  • No data
Median Air Quality Index (US EPA), 2025, index. Rockland 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), Rockland County, 1995 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), Rockland County, 1995 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/rockland-county-new-york. 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), Rockland County, 1995 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/rockland-county-new-york.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Rockland County, 1995 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/rockland-county-new-york (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), Rockland County, 1995 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/rockland-county-new-york. 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), Rockland County, 1995 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/rockland-county-new-york
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/rockland-county-new-york.
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 Rockland County?

Median Air Quality Index (US EPA) in Rockland County was 37 in 2025, according to the U.S. Environmental Protection Agency. That is unchanged 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 Rockland County?

44 in 2011, the highest value since 1995 in this series.

Related statistics for Rockland County

All statistics for Rockland County | Rockland County in figures