SmogRank / World / United States / Indiana / March 2024
Most polluted cities in Indiana, United States, March 2024
21 cities in Indiana, United States ranked by their average PM2.5 over the 31 days. Worst: Indianapolis at 8.6 µg/m³, #636 of 1,643 cities in the world. Cleanest: Portage at 5.7. 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.
- 1Indianapolis 0%
- 2Terre Haute 0%
- 3East Chicago 0%
- 4Evansville 0%
- 5Jeffersonville 0%
- 6Jasper 0%
- 6Fort Wayne 0%
- 8Elkhart 0%
- 9Muncie 0%
- 10Columbia City 0%
- 11Lafayette 0%
- 12Kokomo 0%
- 12South Bend 0%
- 14Columbus 0%
- 14Gary 0%
- 16Bloomington 0%
- 17Anderson 0%
- 18McCordsville 0%
- 18Hammond 0%
- 20New Albany 0%
- 21Portage 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 · Indiana now
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SmogRank, most polluted cities in Indiana, United States, PM2.5, March 2024, smogrank.com/us/region/indiana/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.