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 to25 Jan 2023 That day's board

The worst cities in The Netherlands for PM2.5 over the 30 days to 25 Jan 2023: Velsen-Zuid 10.9 µg/m³, Tilburg 10.6 µg/m³ and Badhoevedorp 10.4 µg/m³.

  1. 1Velsen-ZuidNorth Holland10.9
  2. 2TilburgNorth Brabant10.6
  3. 3BadhoevedorpNorth Holland10.4
  4. 4PurmerendNorth Holland10.2
  5. 5VenrayLimburg9.8
  6. 6RotterdamSouth Holland9.8
  7. 7NijmegenGelderland9.7
  8. 8BredaNorth Brabant9.7
  9. 9AmsterdamNorth Holland9.7
  10. 10's-GravenzandeSouth Holland9.5
  11. 11UtrechtUtrecht9.4
  12. 12HillegomSouth Holland9.4
  13. 13RidderkerkSouth Holland9.3
  14. 14The HagueSouth Holland8.8
  15. 15MaassluisSouth Holland8.8
  16. 16MaarssenUtrecht8.2
  17. 17EnschedeOverijssel8.1
  18. 18IJsselsteinUtrecht7.9
  19. 19MedemblikNorth Holland7.3
  20. 20HeerlenLimburg7.1

+ 1 more city, at 6.9 µg/m³

Days missing from the source archive fall in this window, so fewer countries are counted.

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.