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 Dec 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 13 Dec 2025: Haarlem 14.7 µg/m³, Schiedam 10.9 µg/m³ and Badhoevedorp 10.2 µg/m³.

  1. 1HaarlemNorth Holland14.7
  2. 2SchiedamSouth Holland10.9
  3. 3BadhoevedorpNorth Holland10.2
  4. 4Velsen-ZuidNorth Holland9.6
  5. 5GroningenGroningen9.5
  6. 6VenloLimburg9.2
  7. 7UtrechtUtrecht9.0
  8. 8RidderkerkSouth Holland9.0
  9. 9ZwanenburgNorth Holland8.9
  10. 10RotterdamSouth Holland8.9
  11. 11VelserbroekNorth Holland8.9
  12. 12LunterenGelderland8.7
  13. 13BredaNorth Brabant8.7
  14. 14BarneveldGelderland8.7
  15. 15VenrayLimburg8.5
  16. 16EnschedeOverijssel8.5
  17. 17AmsterdamNorth Holland8.2
  18. 18SpijkenisseSouth Holland8.1
  19. 19ZaanstadNorth Holland7.8
  20. 20NijmegenGelderland7.8

+ 13 more cities, 7.7 µg/m³ and below

Not counted on this day, too few days measured: Waalre since 2 Dec 2025, Tilburg since 2 Dec 2025, Eindhoven since 2 Dec 2025 and 's-Gravenzande since 19 Nov 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.