SmogRank / Countries / Belgium / Flanders

Most polluted cities in Flanders, Belgium

25 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Izegem at 9.5 µg/m³, #432 in the world.

24 good  1 moderate

  1. 1Izegem 9.5
  2. 2Lochristi 6.7
  3. 3Genk 6.4
  4. 4Antwerp 6.3
  5. 5Zwijndrecht 6.2
  6. 6Stabroek 6.2
  7. 7Knokke-Heist 6.2
  8. 8Houthalen 6.2
  9. 9Evergem 6.2
  10. 10Roeselare 6.1
  11. 11Gent 6.1
  12. 12Maldegem 5.9
  13. 13Kortrijk 5.9
  14. 14Koksijde 5.9
  15. 15Kapellen 5.9
  16. 16Beveren 5.9
  17. 17Menen 5.8
  18. 18Mechelen 5.8
  19. 19Willebroek 5.7
  20. 20Grimbergen 5.7
  21. 21Hasselt 5.4
  22. 22Mol 5.3
  23. 23Zaventem 5.2
  24. 24Aarschot 4.8
  25. 25Beersellow-cost sensors 4.1
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Estimated: cities without a monitor

Flanders cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Brugge≈ 9 µg/m³Good
Leuven≈ 7 µg/m³Good
Deurne≈ 9 µg/m³Good
Aalst≈ 8 µg/m³Good
Ostend≈ 9 µg/m³Moderate
Sint-Niklaas≈ 9 µg/m³Good
Borgerhout≈ 9 µg/m³Good
Dendermonde≈ 9 µg/m³Good
Merksem≈ 9 µg/m³Good
Turnhout≈ 9 µg/m³Good
Berchem≈ 9 µg/m³Good
Lokeren≈ 9 µg/m³Good
Wilrijk≈ 9 µg/m³Good
Beringen≈ 8 µg/m³Good
Dilbeek≈ 8 µg/m³Good
Heist-op-den-Berg≈ 8 µg/m³Good
Sint-Truiden≈ 8 µg/m³Good
Brasschaat≈ 9 µg/m³Good
Vilvoorde≈ 8 µg/m³Good
Maasmechelen≈ 8 µg/m³Good
Waregem≈ 9 µg/m³Good
Ieper≈ 10 µg/m³Moderate
Ninove≈ 8 µg/m³Good
Geel≈ 8 µg/m³Good
Halle≈ 8 µg/m³Good
Hoboken≈ 9 µg/m³Good
Schoten≈ 9 µg/m³Good
Lier≈ 9 µg/m³Good
Sint-Amandsberg≈ 9 µg/m³Good
Lommel≈ 9 µg/m³Good
Oudenaarde≈ 9 µg/m³Good
Tienen≈ 8 µg/m³Good
Heusden≈ 8 µg/m³Good
Wevelgem≈ 10 µg/m³Moderate
Geraardsbergen≈ 8 µg/m³Good
Sint-Pieters-Leeuw≈ 8 µg/m³Good
Kessel-Lo≈ 7 µg/m³Good
Blauwput≈ 7 µg/m³Good
Helchteren≈ 8 µg/m³Good
Tongeren≈ 8 µg/m³Good

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SmogRank, most polluted cities in Flanders, Belgium, PM2.5, last 30 days to 2 Oct 2026, 00:00 UTC, smogrank.com/be/region/flanders?w=30d.

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Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.