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 to14 May 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 14 May 2025: Schiedam 11.5 µg/m³, The Hague 11.1 µg/m³ and Badhoevedorp 11.0 µg/m³.

  1. 1SchiedamSouth Holland11.5
  2. 2The HagueSouth Holland11.1
  3. 3BadhoevedorpNorth Holland11.0
  4. 4Velsen-ZuidNorth Holland10.0
  5. 5's-GravenzandeSouth Holland9.8
  6. 6VenrayLimburg9.6
  7. 7TilburgNorth Brabant9.1
  8. 8RotterdamSouth Holland9.1
  9. 9SpijkenisseSouth Holland8.8
  10. 10NoordwijkerhoutSouth Holland8.7
  11. 11MaassluisSouth Holland8.7
  12. 12HillegomSouth Holland8.7
  13. 13RidderkerkSouth Holland8.6
  14. 14VenloLimburg8.4
  15. 15MedemblikNorth Holland8.4
  16. 16BredaNorth Brabant8.4
  17. 17ZwanenburgNorth Holland8.1
  18. 18VelserbroekNorth Holland8.1
  19. 19AmsterdamNorth Holland7.8
  20. 20LunterenGelderland7.6

+ 14 more cities, 7.6 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.