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

Median Air Quality Index (US EPA) in Saginaw County

Median Air Quality Index (US EPA) in Saginaw County was 50 in 2005, according to the U.S. Environmental Protection Agency. That is up 12 from 2004.

2005, index50
Change on 2004+12
Series high522002
Series low81986

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 Saginaw County, 1980 to 2005

01020304050601980198419881992199920051980: 40 index1981: 25 index1982: 20 index1983: 14 index1984: 11 index1985: 11 index1986: 8 index1987: 9 index1988: 18 index1989: 20 index1990: 19 index1991: 25 index1992: 21 index1993: 17 index1994: 18 index1995: 9 index1999: 41 index2000: 45 index2001: 50 index2002: 52 index2003: 51 index2004: 38 index2005: 50 index020406019801988199920051980: 40 index1981: 25 index1982: 20 index1983: 14 index1984: 11 index1985: 11 index1986: 8 index1987: 9 index1988: 18 index1989: 20 index1990: 19 index1991: 25 index1992: 21 index1993: 17 index1994: 18 index1995: 9 index1999: 41 index2000: 45 index2001: 50 index2002: 52 index2003: 51 index2004: 38 index2005: 50 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 23 values
Periodindex
200550
200438
200351
200252
200150
200045
199941
19959
199418
199317
199221
199125
199019
198920
198818
19879
19868
198511
198411
198314
198220
198125
198040

Saginaw County compared with nearby places

Allegan County: 54 indexBay County: 52 indexBenzie County: 43 indexBerrien County: 54 indexCass County: 58 indexChippewa County: 39 indexClinton County: 44 indexDickinson County: 38 indexGenesee County: 48 indexHuron County: 41 indexIngham County: 52 indexIron County: 19 indexKalamazoo County: 54 indexKent County: 55 indexKeweenaw County: 15 indexLeelanau County: 43 indexLenawee County: 47 indexMacomb County: 40 indexMason County: 41 indexMissaukee County: 43 indexMonroe County: 58 indexMuskegon County: 48 indexOakland County: 38 indexOttawa County: 51 indexSaginaw County: 50 indexSt. Clair County: 45 indexSchoolcraft County: 34 indexTuscola County: 35 indexWashtenaw County: 44 indexWayne County: 63 indexWexford County: 37 index
  • Under 38
  • 38 to 41
  • 41 to 44
  • 44 to 50
  • 50 to 54
  • 54 and over
  • No data
Median Air Quality Index (US EPA), 2005, index. Saginaw 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), Saginaw County, 1980 to 2005) [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), Saginaw County, 1980 to 2005. 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/saginaw-county-michigan. 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), Saginaw County, 1980 to 2005. 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/saginaw-county-michigan.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Saginaw County, 1980 to 2005 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/saginaw-county-michigan (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_2005,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Saginaw County, 1980 to 2005}},
  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/saginaw-county-michigan. 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), Saginaw County, 1980 to 2005
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/saginaw-county-michigan
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/saginaw-county-michigan.
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 Saginaw County?

Median Air Quality Index (US EPA) in Saginaw County was 50 in 2005, according to the U.S. Environmental Protection Agency. That is up 12 from 2004.

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 Saginaw County?

52 in 2002, the highest value since 1980 in this series.

Related statistics for Saginaw County

All statistics for Saginaw County | Saginaw County in figures