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

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

Highest daily Air Quality Index (US EPA) in Chippewa County was 66 in 2019, according to the U.S. Environmental Protection Agency. That is down 7 from 2018.

2019, index66
Change on 2018-7
Series high1522002
Series low662019

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 Chippewa County, 2001 to 2019

608010012014016020012004200720102013201620192001: 96 index2002: 152 index2003: 121 index2004: 94 index2005: 126 index2006: 132 index2007: 136 index2008: 138 index2009: 143 index2010: 118 index2011: 97 index2012: 147 index2013: 84 index2014: 77 index2015: 84 index2016: 101 index2017: 87 index2018: 73 index2019: 66 index50751001251501752001200820192001: 96 index2002: 152 index2003: 121 index2004: 94 index2005: 126 index2006: 132 index2007: 136 index2008: 138 index2009: 143 index2010: 118 index2011: 97 index2012: 147 index2013: 84 index2014: 77 index2015: 84 index2016: 101 index2017: 87 index2018: 73 index2019: 66 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 19 values
Periodindex
201966
201873
201787
2016101
201584
201477
201384
2012147
201197
2010118
2009143
2008138
2007136
2006132
2005126
200494
2003121
2002152
200196

Chippewa County compared with nearby places

Allegan County: 115 indexBay County: 85 indexBenzie County: 93 indexBerrien County: 112 indexCass County: 90 indexChippewa County: 66 indexClinton County: 67 indexGenesee County: 75 indexHuron County: 90 indexIngham County: 78 indexKalamazoo County: 87 indexKent County: 90 indexKeweenaw County: 73 indexLenawee County: 91 indexMacomb County: 101 indexManistee County: 101 indexMason County: 64 indexMissaukee County: 74 indexMonroe County: 76 indexMuskegon County: 133 indexOakland County: 122 indexOttawa County: 100 indexSt. Clair County: 108 indexSchoolcraft County: 90 indexTuscola County: 77 indexWashtenaw County: 89 indexWayne County: 142 indexWexford County: 74 index
  • Under 74
  • 74 to 87
  • 87 to 90
  • 90 to 110
  • 110 and over
  • No data
Highest daily Air Quality Index (US EPA), 2019, index. Chippewa 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), Chippewa County, 2001 to 2019) [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), Chippewa County, 2001 to 2019. 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/chippewa-county-michigan. 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), Chippewa County, 2001 to 2019. 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/chippewa-county-michigan.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Chippewa County, 2001 to 2019 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/chippewa-county-michigan (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2019,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Chippewa County, 2001 to 2019}},
  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/chippewa-county-michigan. 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), Chippewa County, 2001 to 2019
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/chippewa-county-michigan
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/chippewa-county-michigan.
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 Chippewa County? Cite the source.
get_value {"indicator":"aqi_max","place":"us-county-26033"}
GET https://invokely.ai/api/v1/value?indicator=aqi_max&place=us-county-26033

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 Chippewa County?

Highest daily Air Quality Index (US EPA) in Chippewa County was 66 in 2019, according to the U.S. Environmental Protection Agency. That is down 7 from 2018.

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 Chippewa County?

152 in 2002, the highest value since 2001 in this series.

Related statistics for Chippewa County

All statistics for Chippewa County | Chippewa County in figures