Ottawa County, Michigan
AQI 40 · Good40
Median AQI
67
90th Percentile
139
Max AQI
302
Days with Data
Ranked #19 of 27 counties in Michigan (by median AQI, lower is better)
Monthly Median AQI — 2025
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40
Median AQI
67
90th Percentile
139
Max AQI
302
Days with Data
Ranked #19 of 27 counties in Michigan (by median AQI, lower is better)
Click a bar to view that month's details