SmogRank / Countries / Belgium / 2025

Most polluted cities in Belgium, 2025

33 cities in Belgium ranked by their average PM2.5 over the 365 days; 31 above the WHO annual guideline (5.0 µg/m³). Worst: Izegem at 12.7 µg/m³, #337 of 2,131 cities in the world. Cleanest: Eupen at 4.8. A city needs measurements on 70% of the days to be ranked.

  1. 1IzegemFlanders
    12.72.5×
  2. 2RoeselareFlanders
    12.12.4×
  3. 3MenenFlanders
    11.82.4×
  4. 3LochristiFlanders
    11.82.4×
  5. 5EvergemFlanders
    11.12.2×
  6. 6GrimbergenFlanders
    11.02.2×
  7. 7KortrijkFlanders
    10.92.2×
  8. 8MaldegemFlanders
    10.62.1×
  9. 9GentFlanders
    10.52.1×
  10. 10ZwijndrechtFlanders
    10.32.1×
  11. 10AntwerpFlanders
    10.32.1×
  12. 12KoksijdeFlanders
    10.22.0×
  13. 12BeverenFlanders
    10.22.0×
  14. 14StabroekFlanders
    10.12.0×
  15. 14HouthalenFlanders
    10.12.0×
  16. 16ZaventemFlanders
    9.92.0×
  17. 16MechelenFlanders
    9.92.0×
  18. 18KapellenFlanders
    9.71.9×
  19. 19HasseltFlanders
    9.61.9×
  20. 20WillebroekFlanders
    9.41.9×
  21. 20MolFlanders
    9.41.9×
  22. 22MonsWallonia
    9.21.8×
  23. 22AarschotFlanders
    9.21.8×
  24. 24RixensartWallonia
    8.81.8×
  25. 24BrusselsBrussels Capital
    8.81.8×
  26. 26TournaiWallonia
    7.41.5×
  27. 27CharleroiWallonia
    7.01.4×
  28. 28Flémalle-HauteWallonia
    6.91.4×
  29. 29LiègeWallonia
    6.61.3×
  30. 30NamurWallonia
    6.01.2×
  31. 31AndenneWallonia
    5.91.2×
  32. 32Marche-en-FamenneWallonia
    4.91.0×
  33. 33EupenWallonia
    4.81.0×
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, 2025 · Belgium now