SmogRank / World / United States / Pennsylvania / June 2024
Most polluted cities in Pennsylvania, United States, June 2024
30 cities in Pennsylvania, United States ranked by their average PM2.5 over the 30 days. Worst: Monessen at 12.1 µg/m³, #316 of 2,517 cities in the world. Cleanest: Altoona at 6.6. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Monessen 0%
- 2West Mifflin 0%
- 3Bensalem 0%
- 3Wilkinsburg 0%
- 5Philadelphia 0%
- 5Beaver Falls 0%
- 7New Holland 0%
- 8Pittsburgh 0%
- 9Kennedy Township 0%
- 10Hershey 0%
- 10Jefferson Hills 0%
- 12Greensburg 0%
- 13Uniontown 0%
- 13Harrisburg 0%
- 15Scranton 0%
- 16Allentown 0%
- 16Lebanon 0%
- 18New Brighton 0%
- 19Johnstown 0%
- 20Hermitage 0%
- 20Norristown 0%
- 22Kennett Square 0%
- 22York 0%
- 22Erie 0%
- 25Bethlehem 0%
- 25State College 0%
- 27Schlusser 0%
- 28Wyomissing 0%
- 29Lancaster 0%
- 30Altoona 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
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SmogRank, most polluted cities in Pennsylvania, United States, PM2.5, June 2024, smogrank.com/us/region/pennsylvania/history/2024-06 (accessed 7 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.