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 to8 Aug 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 8 Aug 2025: Schiedam 8.5 µg/m³, Venlo 6.7 µg/m³ and Badhoevedorp 6.6 µg/m³.

  1. 1SchiedamSouth Holland8.5
  2. 2VenloLimburg6.7
  3. 3BadhoevedorpNorth Holland6.6
  4. 4VenrayLimburg5.9
  5. 5's-GravenzandeSouth Holland5.9
  6. 6RotterdamSouth Holland5.8
  7. 7MedemblikNorth Holland5.8
  8. 8ZwanenburgNorth Holland5.7
  9. 9RidderkerkSouth Holland5.7
  10. 10NoordwijkerhoutSouth Holland5.7
  11. 11HillegomSouth Holland5.7
  12. 12VelserbroekNorth Holland5.7
  13. 13Velsen-ZuidNorth Holland5.6
  14. 14BredaNorth Brabant5.6
  15. 15TilburgNorth Brabant5.5
  16. 16SpijkenisseSouth Holland5.5
  17. 17The HagueSouth Holland5.5
  18. 18AmsterdamNorth Holland5.5
  19. 19WaalreNorth Brabant5.2
  20. 20MaassluisSouth Holland5.2

+ 16 more cities, 5.2 µg/m³ and below

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.