Data / Rankings / Median Air Quality Index (US EPA) / Counties in New York

Counties in New York by median Air Quality Index (US EPA)

New York County had the highest median Air Quality Index (US EPA) of 34 counties in 2007, at 61. Franklin County had the lowest, at 17. The median was 39. Source: the U.S. Environmental Protection Agency.

Keep it in a collection in your library.
Highest61New York County
Lowest17Franklin County
Median3934 counties

Map of counties, 2007

Albany County: 50 indexBronx County: 57 indexChautauqua County: 40 indexChemung County: 34 indexDutchess County: 32 indexErie County: 55 indexEssex County: 43 indexFranklin County: 17 indexHamilton County: 35 indexHerkimer County: 33 indexJefferson County: 37 indexKings County: 55 indexMadison County: 37 indexMonroe County: 43 indexNassau County: 53 indexNew York County: 61 indexNiagara County: 52 indexOneida County: 47 indexOnondaga County: 32 indexOrange County: 47 indexOswego County: 38 indexPutnam County: 34 indexQueens County: 55 indexRensselaer County: 33 indexRichmond County: 53 indexSt. Lawrence County: 28 indexSaratoga County: 33 indexSchenectady County: 28 indexSteuben County: 46 indexSuffolk County: 39 indexTompkins County: 35 indexUlster County: 36 indexWayne County: 38 indexWestchester County: 47 index
  • Under 33
  • 33 to 35
  • 35 to 39
  • 39 to 47
  • 47 to 53
  • 53 and over
  • No data
index, 2007. Hatched areas have no value for this period. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2007

New York County: 61 indexNew York County61Bronx County: 57 indexBronx County57Erie County: 55 indexErie County55Kings County: 55 indexKings County55Queens County: 55 indexQueens County55Nassau County: 53 indexNassau County53Richmond County: 53 indexRichmond County53Niagara County: 52 indexNiagara County52Albany County: 50 indexAlbany County50Oneida County: 47 indexOneida County47Orange County: 47 indexOrange County47Westchester County: 47 indexWestchester County47Steuben County: 46 indexSteuben County46Essex County: 43 indexEssex County43Monroe County: 43 indexMonroe County43Chautauqua County: 40 indexChautauqua County40Suffolk County: 39 indexSuffolk County39Oswego County: 38 indexOswego County38Wayne County: 38 indexWayne County38Jefferson County: 37 indexJefferson County37Madison County: 37 indexMadison County37Ulster County: 36 indexUlster County36Hamilton County: 35 indexHamilton County35Tompkins County: 35 indexTompkins County35Chemung County: 34 indexChemung County34Putnam County: 34 indexPutnam County34Herkimer County: 33 indexHerkimer County33Rensselaer County: 33 indexRensselaer County33Saratoga County: 33 indexSaratoga County33Dutchess County: 32 indexDutchess County32Onondaga County: 32 indexOnondaga County32Schenectady County: 28 indexSchenectady County28St. Lawrence County: 28 indexSt. Lawrence County28Franklin County: 17 indexFranklin County17New York County: 61 indexNew York County61Bronx County: 57 indexBronx County57Erie County: 55 indexErie County55Kings County: 55 indexKings County55Queens County: 55 indexQueens County55Nassau County: 53 indexNassau County53Richmond County: 53 indexRichmond County53Niagara County: 52 indexNiagara County52Albany County: 50 indexAlbany County50Oneida County: 47 indexOneida County47Orange County: 47 indexOrange County47Westchester County: 47 indexWestchester County47Steuben County: 46 indexSteuben County46Essex County: 43 indexEssex County43Monroe County: 43 indexMonroe County43Chautauqua County: 40 indexChautauqua County40Suffolk County: 39 indexSuffolk County39Oswego County: 38 indexOswego County38Wayne County: 38 indexWayne County38Jefferson County: 37 indexJefferson County37Madison County: 37 indexMadison County37Ulster County: 36 indexUlster County36Hamilton County: 35 indexHamilton County35Tompkins County: 35 indexTompkins County35Chemung County: 34 indexChemung County34Putnam County: 34 indexPutnam County34Herkimer County: 33 indexHerkimer County33Rensselaer County: 33 indexRensselaer County33Saratoga County: 33 indexSaratoga County33Dutchess County: 32 indexDutchess County32Onondaga County: 32 indexOnondaga County32Schenectady County: 28 indexSchenectady County28St. Lawrence County: 28 indexSt. Lawrence County28Franklin County: 17 indexFranklin County17
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12.

Full ranking

RankCounties2007
index		Change on 2006
1New York County61+10
2Bronx County57+2
3Erie County55+13
3Kings County55+41
3Queens County55+4
6Nassau County53+18
6Richmond County53+7
8Niagara County52+21
9Albany County50+17
10Oneida County47+14
10Orange County47+5
10Westchester County47+9
13Steuben County46+4
14Essex County43+1
14Monroe County43+9
16Chautauqua County400
17Suffolk County39-3
18Oswego County380
18Wayne County38+7
20Jefferson County37+4
20Madison County37+2
22Ulster County360
23Hamilton County350
23Tompkins County350
25Chemung County34+3
25Putnam County34+1
27Herkimer County330
27Rensselaer County33+1
27Saratoga County33+2
30Dutchess County32+4
30Onondaga County32+1
32Schenectady County28+2
32St. Lawrence County28+2
34Franklin County17-3

Other periods

About this ranking

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.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. 5 counties with data in other periods have no value for 2007 and are left out rather than filled from another source. Equal values share a rank.

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 (Counties in New York by median Air Quality Index (US EPA), 2007) [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, Counties in New York by median Air Quality Index (US EPA), 2007. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/rankings/median-air-quality-index/new-york-counties?period=2007. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: median daily AQI. Counties in New York by median Air Quality Index (US EPA), 2007. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/rankings/median-air-quality-index/new-york-counties?period=2007.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Counties in New York by median Air Quality Index (US EPA), 2007 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/rankings/median-air-quality-index/new-york-counties?period=2007 (Accessed: 12 October 2026).

BibTeX
@misc{environmental_counties_in_new_york_2007,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Counties in New York by median Air Quality Index (US EPA), 2007}},
  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/rankings/median-air-quality-index/new-york-counties?period=2007. 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: Counties in New York by median Air Quality Index (US EPA), 2007
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/rankings/median-air-quality-index/new-york-counties?period=2007
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-air-quality-index/new-york-counties?period=2007.
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:

Rank Counties in New York by median Air Quality Index (US EPA) using official data, and cite the source.
rank_places {"indicator":"aqi_median","level":"province","within":"New York","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=aqi_median&level=province&within=New%20York&limit=10

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

Questions

Which county has the highest median Air Quality Index (US EPA)?

New York County, with 61 in 2007, according to the U.S. Environmental Protection Agency.

Which county has the lowest median Air Quality Index (US EPA)?

Franklin County, with 17 in 2007.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12. 5 counties have no value for 2007 and are not ranked.

Median Air Quality Index (US EPA): other rankings

Counties in New York: more rankings