SmogRank / World / United States / Michigan / October 2026

Most polluted cities in Michigan, United States, October 2026

22 cities in Michigan, United States ranked by their average PM2.5 so far (5 of 31 days). Worst: Wyoming at 9.5 µg/m³, #544 of 2,246 cities in the world. Cleanest: Manistee at 3.1. 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.

← Wyoming 0% 0.75%0
Every city in Michigan, United States ranked for October 2026, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Wyoming
    0%
  2. 2Beecher
    0%
  3. 3Holland
    0%
  4. 4Dearborn
    0%
  5. 5Lincoln Park
    0%
  6. 6Detroit
    0%
  7. 7Redford
    0%
  8. 7Taylor
    0%
  9. 9Ann Arborlow-cost sensors
    0%
  10. 10Kalamazoo
    0%
  11. 11New Baltimore
    0%
  12. 12Tecumseh
    0%
  13. 13Ypsilanti
    0%
  14. 14Eastpointe
    0%
  15. 14Southfield
    0%
  16. 16Bay City
    0%
  17. 16Grand Rapids
    0%
  18. 18Lansing
    0%
  19. 19Hudsonville
    0%
  20. 19Port Huron
    0%
  21. 21Marquette
    0%
  22. 22Manistee
    0%

Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.

Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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, October 2026 · All cities in United States, October 2026 · Michigan now

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SmogRank, most polluted cities in Michigan, United States, PM2.5, October 2026 (so far), smogrank.com/us/region/michigan/history/2026-10 (accessed 6 Oct 2026).

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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.