SmogRank / World / Germany / Hesse / 2025
Most polluted cities in Hesse, Germany, 2025
24 cities in Hesse, Germany ranked by their average PM2.5 over the 365 days; 23 above the WHO annual guideline (5.0 µg/m³). Worst: Kassel at 11.0 µg/m³, #709 of 2,624 cities in the world. Cleanest: Gersfeld at 4.8. 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.
- 1Kassel 3%
- 2Lampertheim 2%
- 3Frankfurt am Main 2%
- 4Großalmerode 2%
- 5Gießen 2%
- 6Bensheim 2%
- 7Zierenberg 2%
- 8Edertal 1%
- 9Fulda 1%
- 10Riedstadt 1%
- 11Rüsselsheim am Main 1%
- 12Sulzbach 1%
- 13Bebra 1%
- 14Wiesbaden 1%
- 14Wetzlar 1%
- 16Limburg an der Lahn 1%
- 17Marburg an der Lahn 1%
- 18Hanau am Main 1%
- 19Kelsterbach 1%
- 20Fürth 1%
- 21Michelstadt 1%
- 22Darmstadt 1%
- 23Glashütten 0%
- 24Gersfeld 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 Hesse, Germany, PM2.5, 2025, smogrank.com/de/region/hesse/history/2025 (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.