Franklin County, Pennsylvania
AQI 37 · Good37
Median AQI
47
90th Percentile
77
Max AQI
157
Days with Data
Ranked #9 of 37 counties in Pennsylvania (by median AQI, lower is better)
Monthly Median AQI — 2025
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37
Median AQI
47
90th Percentile
77
Max AQI
157
Days with Data
Ranked #9 of 37 counties in Pennsylvania (by median AQI, lower is better)
Click a bar to view that month's details