Cass County, Michigan
AQI 40 · Good40
Median AQI
61
90th Percentile
115
Max AQI
224
Days with Data
Ranked #17 of 27 counties in Michigan (by median AQI, lower is better)
Monthly Median AQI — 2025
Click a bar to view that month's details
40
Median AQI
61
90th Percentile
115
Max AQI
224
Days with Data
Ranked #17 of 27 counties in Michigan (by median AQI, lower is better)
Click a bar to view that month's details