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 to15 Mar 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 15 Mar 2025: Schiedam 21.7 µg/m³, The Hague 18.7 µg/m³ and Rotterdam 18.1 µg/m³.

  1. 1SchiedamSouth Holland21.7
  2. 2The HagueSouth Holland18.7
  3. 3RotterdamSouth Holland18.1
  4. 4MaarssenUtrecht17.8
  5. 5BreukelenUtrecht17.8
  6. 6VenloLimburg17.2
  7. 7TilburgNorth Brabant17.0
  8. 8BredaNorth Brabant16.4
  9. 9WaalreNorth Brabant16.3
  10. 10EindhovenNorth Brabant16.3
  11. 11VenrayLimburg15.8
  12. 12MedemblikNorth Holland15.8
  13. 13LopikUtrecht15.5
  14. 14IJsselsteinUtrecht15.5
  15. 15EnschedeOverijssel15.2
  16. 16UtrechtUtrecht14.9
  17. 17LunterenGelderland14.9
  18. 18BarneveldGelderland14.9
  19. 19NoordwijkerhoutSouth Holland14.4
  20. 20HillegomSouth Holland14.4

+ 4 more cities, 14.1 µg/m³ and below

Not counted on this day, too few days measured: Spijkenisse since 17 Jan 2025, 's-Gravenzande since 17 Jan 2025, Maassluis since 17 Jan 2025 and 6 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.