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 to11 Jun 2026 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 11 Jun 2026: 's-Gravenzande 8.1 µg/m³, Velsen-Zuid 7.8 µg/m³ and Haarlem 7.6 µg/m³.

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

+ 16 more cities, 6.5 µg/m³ and below

Not counted on this day, too few days measured: Schiedam since 9 Jun 2026.

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.