SmogRank / World / Germany / North Rhine-Westphalia / February 2025

Most polluted cities in North Rhine-Westphalia, Germany, February 2025

32 cities in North Rhine-Westphalia, Germany ranked by their average PM2.5 over the 28 days. Worst: Münster at 23.8 µg/m³, #317 of 2,574 cities in the world. Cleanest: Aachen at 15.9. 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.

← Münster 17% 10%0
Every city in North Rhine-Westphalia, Germany ranked for February 2025, 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. 1Münster
    17%
  2. 2Bielefeld
    17%
  3. 3Kaldenkirchen
    17%
  4. 4Bonn
    17%
  5. 5Wesel
    13%
  6. 6Titz
    13%
  7. 7Krefeld
    13%
  8. 7Datteln
    13%
  9. 9Bottrop
    13%
  10. 10Oberhausen
    13%
  11. 11Borken
    13%
  12. 12Dortmund
    13%
  13. 13Unna
    13%
  14. 13Gelsenkirchen
    13%
  15. 15Duisburg
    13%
  16. 16Niederzier
    13%
  17. 17Düsseldorf
    13%
  18. 18Köln
    13%
  19. 18Essen
    13%
  20. 20Aachen
    13%
  21. 21Jüchen
    9%
  22. 22Hagen
    8%
  23. 23Mönchengladbach
    8%
  24. 24Wuppertal
    8%
  25. 25Hattingen
    8%
  26. 26Sinnersdorf
    8%
  27. 27Ratingen
    8%
  28. 27Leverkusen
    8%
  29. 29Soest
    8%
  30. 30Lüdenscheid
    8%
  31. 31Warstein
    8%
  32. 32Schwerte
    8%
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

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SmogRank, most polluted cities in North Rhine-Westphalia, Germany, PM2.5, February 2025, smogrank.com/de/region/north-rhine-westphalia/history/2025-02 (accessed 7 Oct 2026).

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