SmogRank / History / City race
Cities in Germany, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in Germany for PM2.5 over the 30 days to 17 May 2025: Speyer 10.3 µg/m³, Mahlow 10.2 µg/m³ and Unna 10.1 µg/m³.
- 1SpeyerRheinland-Pfalz10.3
- 2MahlowBrandenburg10.2
- 3UnnaNorth Rhine-Westphalia10.1
- 4KrefeldNorth Rhine-Westphalia10.1
- 5OldenburgLower Saxony9.9
- 6NiederzierNorth Rhine-Westphalia9.9
- 7JülichNorth Rhine-Westphalia9.9
- 8TrierRheinland-Pfalz9.8
- 9DortmundNorth Rhine-Westphalia9.8
- 10WismarMecklenburg-Vorpommern9.6
- 11BernburgSaxony-Anhalt9.6
- 12OberhausenNorth Rhine-Westphalia9.2
- 13GelsenkirchenNorth Rhine-Westphalia9.2
- 14BerlinState of Berlin9.2
- 15NeubrandenburgMecklenburg-Vorpommern8.9
- 16MünsterNorth Rhine-Westphalia8.9
- 17FriesoytheLower Saxony8.9
- 18BöselLower Saxony8.9
- 19AltenburgThuringia8.9
- 20MönchengladbachNorth Rhine-Westphalia8.8
+ 215 more cities, 8.8 µg/m³ and below
Not counted on this day, too few days measured: Wesel since 29 Apr 2025.
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.