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 to10 May 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 10 May 2025: Schiedam 13.0 µg/m³, Badhoevedorp 12.7 µg/m³ and The Hague 12.4 µg/m³.

  1. 1SchiedamSouth Holland13.0
  2. 2BadhoevedorpNorth Holland12.7
  3. 3The HagueSouth Holland12.4
  4. 4's-GravenzandeSouth Holland11.5
  5. 5Velsen-ZuidNorth Holland11.3
  6. 6VenrayLimburg10.6
  7. 7RotterdamSouth Holland10.5
  8. 8SpijkenisseSouth Holland10.4
  9. 9RidderkerkSouth Holland10.4
  10. 10MaassluisSouth Holland10.3
  11. 11TilburgNorth Brabant9.8
  12. 12VenloLimburg9.6
  13. 13ZwanenburgNorth Holland9.3
  14. 14NoordwijkerhoutSouth Holland9.3
  15. 15HillegomSouth Holland9.3
  16. 16BredaNorth Brabant9.3
  17. 17VelserbroekNorth Holland9.3
  18. 18AmsterdamNorth Holland9.1
  19. 19MedemblikNorth Holland9.0
  20. 20LunterenGelderland8.5

+ 14 more cities, 8.5 µg/m³ and below

Not counted on this day, too few days measured: Wormer since 22 Apr 2025 and Purmerend since 22 Apr 2025.

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.