Philadelphia County, Pennsylvania

AQI 50 · Good

YearMonth

50

Median AQI

71

90th Percentile

147

Max AQI

182

Days with Data

Ranked #37 of 37 counties in Pennsylvania (by median AQI, lower is better)

Monthly Median AQI — 2025

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AQI Category Breakdown

Adjacent Counties

Burlington County, New Jersey Camden County, New Jersey Gloucester County, New Jersey Bucks County Delaware County Montgomery County

External Links

Philadelphia County, Pennsylvania on Wikipedia