Hamilton County, Ohio
AQI 54 · Moderate54
Median AQI
74
90th Percentile
154
Max AQI
274
Days with Data
Ranked #36 of 37 counties in Ohio (by median AQI, lower is better)
Monthly Median AQI — 2025
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54
Median AQI
74
90th Percentile
154
Max AQI
274
Days with Data
Ranked #36 of 37 counties in Ohio (by median AQI, lower is better)
Click a bar to view that month's details