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 to9 Feb 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 9 Feb 2025: Maarssen 20.2 µg/m³, Breukelen 20.2 µg/m³ and Tilburg 18.3 µg/m³.

  1. 1MaarssenUtrecht20.2
  2. 2BreukelenUtrecht20.2
  3. 3TilburgNorth Brabant18.3
  4. 4The HagueSouth Holland17.9
  5. 5BredaNorth Brabant17.9
  6. 6WaalreNorth Brabant17.3
  7. 7EindhovenNorth Brabant17.3
  8. 8LunterenGelderland16.9
  9. 9LopikUtrecht16.9
  10. 10IJsselsteinUtrecht16.9
  11. 11BarneveldGelderland16.9
  12. 12VenloLimburg16.8
  13. 13VenrayLimburg16.7
  14. 14RotterdamSouth Holland16.7
  15. 15MedemblikNorth Holland16.2
  16. 16UtrechtUtrecht16.0
  17. 17NijmegenGelderland14.9
  18. 18EnschedeOverijssel14.3
  19. 19NoordwijkerhoutSouth Holland14.2
  20. 20HillegomSouth Holland14.2

+ 3 more cities, 13.8 µg/m³ and below

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 readers for them. Most cities there are missing from this board, not clean. Why.