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 28 May 2023: Krefeld 14.9 µg/m³, Duisburg 12.6 µg/m³ and Datteln 12.2 µg/m³.
- 1KrefeldNorth Rhine-Westphalia14.9
- 2DuisburgNorth Rhine-Westphalia12.6
- 3DattelnNorth Rhine-Westphalia12.2
- 4NiederzierNorth Rhine-Westphalia11.9
- 5JülichNorth Rhine-Westphalia11.9
- 6EssenNorth Rhine-Westphalia11.8
- 7DüsseldorfNorth Rhine-Westphalia11.7
- 8MahlowBrandenburg11.4
- 9AachenNorth Rhine-Westphalia11.4
- 10GelsenkirchenNorth Rhine-Westphalia11.3
- 11TeltowBrandenburg11.2
- 12SolingenNorth Rhine-Westphalia11.2
- 13HagenNorth Rhine-Westphalia11.0
- 14BergheimNorth Rhine-Westphalia11.0
- 15TitzNorth Rhine-Westphalia10.9
- 16OberhausenNorth Rhine-Westphalia10.8
- 17NordhausenThuringia10.8
- 18KölnNorth Rhine-Westphalia10.8
- 19Halle (Saale)Saxony-Anhalt10.7
- 20WeidenBavaria10.6
+ 174 more cities, the next at 10.6 µg/m³
Not counted on this day, too few days measured: Luckenwalde since 30 Mar 2023, Kaiserslautern since 30 Mar 2023, Jüchen since 30 Mar 2023 and 3 more cities.
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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.