SmogRank / Countries / The Netherlands / September 2025

Most polluted cities in The Netherlands, September 2025

28 cities in The Netherlands ranked by their average PM2.5 over the 30 days. Worst: Schiedam at 8.3 µg/m³, #789 of 2,439 cities in the world. Cleanest: Heerlen at 3.5. A city needs measurements on 70% of the days to be ranked.

  1. 1SchiedamSouth Holland
    8.3
  2. 2BadhoevedorpNorth Holland
    7.3
  3. 3Velsen-ZuidNorth Holland
    6.9
  4. 4HillegomSouth Holland
    6.1
  5. 5TilburgNorth Brabant
    6.0
  6. 6The HagueSouth Holland
    5.9
  7. 6NijmegenGelderland
    5.9
  8. 6MedemblikNorth Holland
    5.9
  9. 6BredaNorth Brabant
    5.9
  10. 10BarneveldGelderland
    5.8
  11. 11RotterdamSouth Holland
    5.7
  12. 11IJsselsteinUtrecht
    5.7
  13. 13VenrayLimburg
    5.6
  14. 13VenloLimburg
    5.6
  15. 15AmsterdamNorth Holland
    5.5
  16. 16UtrechtUtrecht
    5.4
  17. 16RidderkerkSouth Holland
    5.4
  18. 18EindhovenNorth Brabant
    5.3
  19. 19SpijkenisseSouth Holland
    5.2
  20. 19's-GravenzandeSouth Holland
    5.2
  21. 19VelserbroekNorth Holland
    5.2
  22. 22MaarssenUtrecht
    5.0
  23. 22EnschedeOverijssel
    5.0
  24. 24ZaanstadNorth Holland
    4.9
  25. 24MaassluisSouth Holland
    4.9
  26. 26GroningenGroningen
    4.7
  27. 27PurmerendNorth Holland
    4.5
  28. 28HeerlenLimburg
    3.5
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2025 · The Netherlands now