Air Quality Rankings for Michigan 2026

Michigan has 28 cities with EPA air quality data. Keweenaw, Michigan has the cleanest air with a 5-year average AQI of 13. Wayne, Michigan has the highest AQI at 58.

#	City	5yr Avg AQI	Current AQI	Worst Pollutant	Trend	Grade
1	Keweenaw, Michigan	13	16	PM2.5	Stable	B
2	Monroe, Michigan	21	25	PM10	Improving	A
3	Bay, Michigan	32	42	PM2.5	Improving	B
4	Tuscola, Michigan	33	34	Ozone	Stable	B
5	Wexford, Michigan	34	35	Ozone	Stable	B
6	Schoolcraft, Michigan	35	36	PM2.5	Stable	B
7	Manistee, Michigan	36	39	Ozone	Stable	B
8	Benzie, Michigan	36	38	Ozone	Improving	B
9	Clinton, Michigan	36	38	Ozone	Improving	B
10	Huron, Michigan	37	39	Ozone	Stable	B
11	Mason, Michigan	37	40	Ozone	Stable	B
12	Muskegon, Michigan	39	41	Ozone	Stable	B
13	Oakland, Michigan	39	41	Ozone	Improving	B
14	Berrien, Michigan	40	42	Ozone	Improving	B
15	Cass, Michigan	40	42	Ozone	Improving	B
16	Allegan, Michigan	40	42	Ozone	Improving	B
17	Ingham, Michigan	42	43	PM2.5	Improving	B
18	Genesee, Michigan	42	44	PM2.5	Improving	B
19	Chippewa, Michigan	43	43	PM2.5	Worsening	C
20	Missaukee, Michigan	43	48	Ozone	Worsening	C
21	Ottawa, Michigan	44	51	Ozone	Worsening	C
22	St. Clair, Michigan	44	49	PM2.5	Stable	C
23	Macomb, Michigan	44	51	Ozone	Worsening	C
24	Kent, Michigan	45	49	PM2.5	Stable	C
25	Lenawee, Michigan	45	50	PM2.5	Stable	C
26	Washtenaw, Michigan	46	52	PM2.5	Stable	C
27	Kalamazoo, Michigan	47	53	PM2.5	Worsening	C
28	Wayne, Michigan	58	61	PM2.5	Stable	C

Air quality data for Michigan is sourced from the EPA Air Quality System (AQS), which monitors outdoor air quality at thousands of stations nationwide.
— EPA Air Quality System

Frequently Asked Questions

Keweenaw, Michigan has the best air quality in Michigan with a 5-year average AQI of 13 and a grade of B.

Michigan has 28 cities with EPA air quality monitoring data in our database, covering multiple years of AQI measurements.

The Air Quality Index (AQI) measures five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Lower AQI values indicate cleaner air — 0-50 is "Good," while 150+ is "Unhealthy."

Sources: EPA Air Quality System (AQS)

Cities ranked by 5-year average AQI (lower is better). Grades factor in average AQI, trend direction, unhealthy days, and dominant pollutant.

Cleanest Cities Nationwide →All Air Quality in Michigan →