SmogRank / World / United States / Indiana / December 2025
Most polluted cities in Indiana, United States, December 2025
22 cities in Indiana, United States ranked by their average PM2.5 over the 31 days. Worst: Fort Wayne at 11.8 µg/m³, #994 of 2,960 cities in the world. Cleanest: McCordsville at 6.7. 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.
- 1Fort Wayne 0%
- 2Columbia City 0%
- 3Indianapolis 0%
- 4Lafayette 0%
- 5Jeffersonville 0%
- 6Gary 0%
- 7Muncie 0%
- 8Evansville 0%
- 9Elkhart 0%
- 9Portage 0%
- 11Jasper 0%
- 11East Chicago 0%
- 13Anderson 0%
- 14Hammond 0%
- 15Bloomington 0%
- 16Terre Haute 0%
- 17Kokomo 0%
- 17Michigan City 0%
- 19New Albany 0%
- 20South Bend 0%
- 21Columbus 0%
- 22McCordsville 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, December 2025, smogrank.com/us/region/indiana/history/2025-12 (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.