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 to10 Dec 2025 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 10 Dec 2025: Haarlem 13.6 µg/m³, Schiedam 10.6 µg/m³ and Badhoevedorp 9.6 µg/m³.

  1. 1HaarlemNorth Holland13.6
  2. 2SchiedamSouth Holland10.6
  3. 3BadhoevedorpNorth Holland9.6
  4. 4Velsen-ZuidNorth Holland9.2
  5. 5GroningenGroningen9.1
  6. 6VenloLimburg8.6
  7. 7UtrechtUtrecht8.5
  8. 8BredaNorth Brabant8.3
  9. 9RotterdamSouth Holland8.2
  10. 10ZwanenburgNorth Holland8.1
  11. 11VelserbroekNorth Holland8.1
  12. 12RidderkerkSouth Holland8.0
  13. 13EnschedeOverijssel8.0
  14. 14VenrayLimburg7.9
  15. 15LunterenGelderland7.9
  16. 16BarneveldGelderland7.9
  17. 17AmsterdamNorth Holland7.5
  18. 18SpijkenisseSouth Holland7.4
  19. 19NijmegenGelderland7.3
  20. 20NoordwijkerhoutSouth Holland7.2

+ 13 more cities, 7.2 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.