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 to13 Jun 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 13 Jun 2025: The Hague 8.5 µg/m³, Schiedam 8.4 µg/m³ and Medemblik 8.0 µg/m³.

  1. 1The HagueSouth Holland8.5
  2. 2SchiedamSouth Holland8.4
  3. 3MedemblikNorth Holland8.0
  4. 4ZwanenburgNorth Holland7.6
  5. 5NoordwijkerhoutSouth Holland7.6
  6. 6HillegomSouth Holland7.6
  7. 7VelserbroekNorth Holland7.6
  8. 8VenloLimburg7.5
  9. 9's-GravenzandeSouth Holland7.5
  10. 10RotterdamSouth Holland7.5
  11. 11AmsterdamNorth Holland7.4
  12. 12BadhoevedorpNorth Holland7.3
  13. 13VenrayLimburg7.2
  14. 14RidderkerkSouth Holland7.2
  15. 15Velsen-ZuidNorth Holland7.1
  16. 16TilburgNorth Brabant7.0
  17. 17SpijkenisseSouth Holland6.8
  18. 18BredaNorth Brabant6.8
  19. 19ZaanstadNorth Holland6.4
  20. 20MaassluisSouth Holland6.4

+ 14 more cities, 5.9 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.