Data / Highest daily Air Quality Index (US EPA) / Rockland County

Highest daily Air Quality Index (US EPA) in Rockland County

Highest daily Air Quality Index (US EPA) in Rockland County was 136 in 2025, according to the U.S. Environmental Protection Agency. That is down 14 from 2024.

2025, index136
Change on 2024-14
Series high2102018
Series low211995

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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Highest daily Air Quality Index (US EPA) in Rockland County, 1995 to 2025

05010015020025019951998201120142017202020251995: 21 index1996: 58 index1997: 48 index1998: 44 index2009: 100 index2010: 156 index2011: 122 index2012: 159 index2013: 143 index2014: 100 index2015: 143 index2016: 136 index2017: 105 index2018: 210 index2019: 112 index2020: 93 index2021: 155 index2022: 90 index2023: 197 index2024: 150 index2025: 136 index05010015020025019952012201920251995: 21 index1996: 58 index1997: 48 index1998: 44 index2009: 100 index2010: 156 index2011: 122 index2012: 159 index2013: 143 index2014: 100 index2015: 143 index2016: 136 index2017: 105 index2018: 210 index2019: 112 index2020: 93 index2021: 155 index2022: 90 index2023: 197 index2024: 150 index2025: 136 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 21 values
Periodindex
2025136
2024150
2023197
202290
2021155
202093
2019112
2018210
2017105
2016136
2015143
2014100
2013143
2012159
2011122
2010156
2009100
199844
199748
199658
199521

Rockland County compared with nearby places

Albany County: 136 indexBronx County: 143 indexChautauqua County: 108 indexDutchess County: 140 indexErie County: 140 indexEssex County: 159 indexHamilton County: 87 indexJefferson County: 87 indexKings County: 99 indexMonroe County: 135 indexNassau County: 92 indexNew York County: 136 indexNiagara County: 115 indexOneida County: 99 indexOnondaga County: 125 indexOrange County: 108 indexOswego County: 80 indexPutnam County: 97 indexQueens County: 154 indexRichmond County: 129 indexRockland County: 136 indexSaratoga County: 93 indexSteuben County: 143 indexSuffolk County: 154 indexTompkins County: 74 indexWayne County: 90 indexWestchester County: 136 index
  • Under 92
  • 92 to 110
  • 110 to 140
  • 140 and over
  • No data
Highest daily 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

Highest daily Air Quality Index (AQI) value recorded in a US county during the year, from the EPA AirData annual summaries. Values above 500 are beyond the AQI scale and are published as EPA computes them.

A single day decides the value, so one wildfire or dust event can set it. Dust from the dry Owens Lake bed puts Inyo and Mono counties in California in the thousands. 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: highest 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: highest daily AQI (Highest daily 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: highest daily AQI, Highest daily 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/highest-daily-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: highest daily AQI. Highest daily 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/highest-daily-air-quality-index/rockland-county-new-york.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily 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/highest-daily-air-quality-index/rockland-county-new-york (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2025,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily 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/highest-daily-air-quality-index/rockland-county-new-york. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: highest 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: highest daily AQI: Highest daily 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/highest-daily-air-quality-index/rockland-county-new-york
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-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: highest 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 highest daily Air Quality Index (US EPA) in Rockland County?

Highest daily Air Quality Index (US EPA) in Rockland County was 136 in 2025, according to the U.S. Environmental Protection Agency. That is down 14 from 2024.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: highest daily AQI. Retrieved by Invokely on 2026-10-12.

What was the highest highest daily Air Quality Index (US EPA) in Rockland County?

210 in 2018, the highest value since 1995 in this series.

Related statistics for Rockland County

All statistics for Rockland County | Rockland County in figures