SmogRank / World / United States / Pennsylvania / March 2024
Most polluted cities in Pennsylvania, United States, March 2024
30 cities in Pennsylvania, United States ranked by their average PM2.5 over the 31 days. Worst: Bensalem at 8.8 µg/m³, #603 of 1,643 cities in the world. Cleanest: Erie at 4.4. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none from the United States for March 20, 2024: cities in the United States have it from the EPA's own records of the same monitors. Why.
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.
- 1Bensalem 0%
- 2New Holland 0%
- 3West Mifflin 0%
- 4Philadelphia 0%
- 4Lancaster 0%
- 6Monessen 0%
- 7Beaver Falls 0%
- 8Harrisburg 0%
- 8Lebanon 0%
- 10Greensburg 0%
- 10Jefferson Hills 0%
- 10Pittsburgh 0%
- 10Wilkinsburg 0%
- 14Uniontown 0%
- 15York 0%
- 16Schlusser 0%
- 16Kennedy Township 0%
- 18Wyomissing 0%
- 19Bethlehem 0%
- 19Johnstown 0%
- 21Kennett Square 0%
- 22Hermitage 0%
- 22New Brighton 0%
- 22Norristown 0%
- 25Canonsburg 0%
- 25Scranton 0%
- 27Allentown 0%
- 27State College 0%
- 29Altoona 0%
- 30Erie 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
All cities in the world, March 2024 · All cities in United States, March 2024 · Pennsylvania now
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SmogRank, most polluted cities in Pennsylvania, United States, PM2.5, March 2024, smogrank.com/us/region/pennsylvania/history/2024-03 (accessed 6 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.