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

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

Highest daily Air Quality Index (US EPA) in Greene County was 60 in 1998, according to the U.S. Environmental Protection Agency. That is up 13 from 1997.

1998, index60
Change on 1997+13
Series high871990
Series low351995

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.

Highest daily Air Quality Index (US EPA) in Greene County, 1986 to 1998

2040608010019861988199019921994199619981986: 42 index1987: 57 index1988: 55 index1989: 55 index1990: 87 index1991: 45 index1992: 47 index1993: 54 index1994: 37 index1995: 35 index1996: 49 index1997: 47 index1998: 60 index204060801001986199119981986: 42 index1987: 57 index1988: 55 index1989: 55 index1990: 87 index1991: 45 index1992: 47 index1993: 54 index1994: 37 index1995: 35 index1996: 49 index1997: 47 index1998: 60 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 13 values
Periodindex
199860
199747
199649
199535
199437
199354
199247
199145
199087
198955
198855
198757
198642

Greene County compared with nearby places

Albany County: 150 indexBronx County: 187 indexBroome County: 50 indexChautauqua County: 201 indexChemung County: 164 indexColumbia County: 51 indexDutchess County: 192 indexErie County: 182 indexEssex County: 185 indexGreene County: 60 indexHamilton County: 151 indexHerkimer County: 147 indexJefferson County: 187 indexKings County: 52 indexMadison County: 164 indexMonroe County: 150 indexNassau County: 113 indexNew York County: 207 indexNiagara County: 172 indexOneida County: 151 indexOnondaga County: 156 indexOrange County: 169 indexPutnam County: 179 indexQueens County: 182 indexRensselaer County: 54 indexRichmond County: 202 indexRockland County: 44 indexSaratoga County: 187 indexSchenectady County: 136 indexSuffolk County: 218 indexTompkins County: 177 indexUlster County: 154 indexWayne County: 169 indexWestchester County: 172 index
  • Under 87
  • 87 to 150
  • 150 to 170
  • 170 to 180
  • 180 to 190
  • 190 and over
  • No data
Highest daily Air Quality Index (US EPA), 1998, index. Greene 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.

Report a problem with this figure

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), Greene County, 1986 to 1998) [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), Greene County, 1986 to 1998. 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/greene-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), Greene County, 1986 to 1998. 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/greene-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), Greene County, 1986 to 1998 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/greene-county-new-york (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_1998,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Greene County, 1986 to 1998}},
  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/greene-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), Greene County, 1986 to 1998
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/greene-county-new-york
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/greene-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  -
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 highest daily Air Quality Index (US EPA) in Greene County? Cite the source.
get_value {"indicator":"aqi_max","place":"us-county-36039"}
GET https://invokely.ai/api/v1/value?indicator=aqi_max&place=us-county-36039

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

Questions

What is the highest daily Air Quality Index (US EPA) in Greene County?

Highest daily Air Quality Index (US EPA) in Greene County was 60 in 1998, according to the U.S. Environmental Protection Agency. That is up 13 from 1997.

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 Greene County?

87 in 1990, the highest value since 1986 in this series.

Related statistics for Greene County

All statistics for Greene County | Greene County in figures