SmogRank / World / United States / Minnesota / 2026
Most polluted cities in Minnesota, United States, 2026
16 cities in Minnesota, United States ranked by their average PM2.5 so far (278 of 365 days); 16 above the WHO annual guideline (5.0 µg/m³). Worst: Duluth at 9.6 µg/m³, #1,101 of 2,745 cities in the world. Cleanest: Marshall at 5.8. 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.
- 1Duluth 1%
- 2Virginia 1%
- 3Saint Paul 1%
- 4Burnsville 1%
- 5Minneapolis 1%
- 6Blaine 1%
- 7Brainerd 1%
- 7Cloquet 1%
- 9Apple Valley 1%
- 10Shakopee 1%
- 11Saint Cloud 1%
- 12Saint Michael 1%
- 13Detroit Lakes 1%
- 14Rochester 0%
- 15Mankato 0%
- 16Marshall 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 Minnesota, United States, PM2.5, 2026 (so far), smogrank.com/us/region/minnesota/history/2026 (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.