SmogRank / Countries / The Netherlands / May 2026

Most polluted cities in The Netherlands, May 2026

27 cities in The Netherlands ranked by their average PM2.5 over the 31 days. Worst: Haarlem at 10.7 µg/m³, #378 of 2,243 cities in the world. Cleanest: Purmerend at 5.3. A city needs measurements on 70% of the days to be ranked.

  1. 1Haarlemlow-cost sensorsNorth Holland
    10.7
  2. 2SchiedamSouth Holland
    10.0
  3. 3's-GravenzandeSouth Holland
    9.0
  4. 4Velsen-ZuidNorth Holland
    8.6
  5. 5RidderkerkSouth Holland
    8.5
  6. 5BadhoevedorpNorth Holland
    8.5
  7. 7TilburgNorth Brabant
    8.4
  8. 8EindhovenNorth Brabant
    8.3
  9. 9MaassluisSouth Holland
    8.1
  10. 10SpijkenisseSouth Holland
    8.0
  11. 10BredaNorth Brabant
    8.0
  12. 12MedemblikNorth Holland
    7.9
  13. 13RotterdamSouth Holland
    7.8
  14. 14ZaanstadNorth Holland
    7.5
  15. 15HillegomSouth Holland
    7.4
  16. 15AmsterdamNorth Holland
    7.4
  17. 15VelserbroekNorth Holland
    7.4
  18. 18The HagueSouth Holland
    7.1
  19. 19VenloLimburg
    6.7
  20. 20GroningenGroningen
    6.4
  21. 21IJsselsteinUtrecht
    5.9
  22. 21EnschedeOverijssel
    5.9
  23. 23UtrechtUtrecht
    5.7
  24. 23MaarssenUtrecht
    5.7
  25. 23HeerlenLimburg
    5.7
  26. 26NijmegenGelderland
    5.5
  27. 27PurmerendNorth Holland
    5.3
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, May 2026 · The Netherlands now

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SmogRank, most polluted cities in The Netherlands, PM2.5, May 2026, smogrank.com/nl/history/2026-05 (accessed 2 Oct 2026).

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