SmogRank / History / City race
Cities in The Netherlands, 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 The Netherlands for PM2.5 over the 30 days to 17 Apr 2025: Badhoevedorp 15.2 µg/m³, Velsen-Zuid 15.1 µg/m³ and Schiedam 14.0 µg/m³.
- 1BadhoevedorpNorth Holland15.2
- 2Velsen-ZuidNorth Holland15.1
- 3SchiedamSouth Holland14.0
- 4ZwanenburgNorth Holland13.9
- 5's-GravenzandeSouth Holland13.9
- 6VelserbroekNorth Holland13.9
- 7RidderkerkSouth Holland13.6
- 8AmsterdamNorth Holland13.3
- 9SpijkenisseSouth Holland13.2
- 10The HagueSouth Holland12.9
- 11RotterdamSouth Holland12.9
- 12VenrayLimburg12.6
- 13ZaanstadNorth Holland12.4
- 14VenloLimburg12.3
- 15MaassluisSouth Holland12.3
- 16MedemblikNorth Holland12.2
- 17MaarssenUtrecht12.1
- 18BreukelenUtrecht12.1
- 19WormerNorth Holland11.8
- 20PurmerendNorth Holland11.8
+ 16 more cities, the next at 11.4 µg/m³
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.