SmogRank / World / Germany / Thuringia / January 2026

Most polluted cities in Thuringia, Germany, January 2026

15 cities in Thuringia, Germany ranked by their average PM2.5 over the 31 days. Worst: Bad Frankenhausen at 25.4 µg/m³, #240 of 2,593 cities in the world. Cleanest: Neuhaus am Rennweg at 8.2. 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.

← Bad Frankenhausen 21% 20%0
Every city in Thuringia, Germany ranked for January 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. 1Bad Frankenhausen
    21%
  2. 2Mühlhausen
    21%
  3. 3Nordhausen
    14%
  4. 4Weimar
    14%
  5. 5Erfurt
    14%
  6. 6Eisenach
    14%
  7. 7Sondershausen
    14%
  8. 8Greiz
    11%
  9. 9Altenburg
    11%
  10. 10Gera
    11%
  11. 11Jena
    11%
  12. 12Kahla
    4%
  13. 13Meiningen
    0%
  14. 14Suhl
    0%
  15. 15Neuhaus am Rennweg
    0%
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 Thuringia, Germany, PM2.5, January 2026, smogrank.com/de/region/thuringia/history/2026-01 (accessed 7 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.