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.

CountriesCities
The 30 days to16 Feb 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 16 Feb 2025: Maarssen 23.1 µg/m³, Breukelen 23.1 µg/m³ and Tilburg 20.8 µg/m³.

  1. 1MaarssenUtrecht23.1
  2. 2BreukelenUtrecht23.1
  3. 3TilburgNorth Brabant20.8
  4. 4The HagueSouth Holland20.5
  5. 5BredaNorth Brabant20.5
  6. 6LopikUtrecht20.3
  7. 7IJsselsteinUtrecht20.3
  8. 8RotterdamSouth Holland20.2
  9. 9LunterenGelderland19.8
  10. 10BarneveldGelderland19.8
  11. 11WaalreNorth Brabant19.7
  12. 12MedemblikNorth Holland19.7
  13. 13EindhovenNorth Brabant19.7
  14. 14VenrayLimburg19.2
  15. 15VenloLimburg19.1
  16. 16UtrechtUtrecht18.8
  17. 17KollumFriesland17.9
  18. 18EnschedeOverijssel17.7
  19. 19NoordwijkerhoutSouth Holland17.5
  20. 20NijmegenGelderland17.5

+ 3 more cities, the next at 17.5 µg/m³

Not counted on this day, too few days measured: Schiedam since 27 Jan 2025, Spijkenisse since 17 Jan 2025, 's-Gravenzande since 17 Jan 2025 and 10 more cities.

30 days7 days
GoodModerateSensitive groupsUnhealthyVery unhealthyHazardousWHO 24-hour guideline, 15 µg/m³Fades where it stood: not counted that 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.