SmogRank / World / United States / Indiana / May 2026
Most polluted cities in Indiana, United States, May 2026
17 cities in Indiana, United States ranked by their average PM2.5 over the 31 days. Worst: Indianapolis at 7.8 µg/m³, #1,358 of 2,852 cities in the world. Cleanest: Anderson at 5.0. 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.
- 1Indianapolis 0%
- 2Columbia City 0%
- 3Hammond 0%
- 4Evansville 0%
- 5Fort Wayne 0%
- 6Elkhart 0%
- 7Jeffersonville 0%
- 8East Chicago 0%
- 9Jasper 0%
- 10Lafayette 0%
- 11Bloomington 0%
- 11Portage 0%
- 13South Bend 0%
- 14Michigan City 0%
- 15Muncie 0%
- 16New Albany 0%
- 17Anderson 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 Indiana, United States, PM2.5, May 2026, smogrank.com/us/region/indiana/history/2026-05 (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.