Cumberland County, Maine
AQI 39 · Good39
Median AQI
63
90th Percentile
136
Max AQI
304
Days with Data
Ranked #10 of 11 counties in Maine (by median AQI, lower is better)
Monthly Median AQI — 2025
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39
Median AQI
63
90th Percentile
136
Max AQI
304
Days with Data
Ranked #10 of 11 counties in Maine (by median AQI, lower is better)
Click a bar to view that month's details