Jefferson County, Kentucky
AQI 48 · Good48
Median AQI
63
90th Percentile
129
Max AQI
182
Days with Data
Ranked #25 of 25 counties in Kentucky (by median AQI, lower is better)
Monthly Median AQI — 2025
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48
Median AQI
63
90th Percentile
129
Max AQI
182
Days with Data
Ranked #25 of 25 counties in Kentucky (by median AQI, lower is better)
Click a bar to view that month's details