SmogRank / World / Europe / Belgium / Flanders

Most polluted cities in Flanders, Belgium

18 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Izegem at 7.4 µg/m³, #651 in the world.

Flanders: 18 measured citiesWallonia: 10 measured citiesBrussels Capital: 1 measured city#18 Maldegem: 3.7 µg/m³#17 Roeselare: 4.0 µg/m³#16 Kortrijk: 4.2 µg/m³#14 Menen: 4.4 µg/m³#15 Knokke-Heist: 4.4 µg/m³#13 Aarschot: 4.5 µg/m³#12 Evergem: 4.6 µg/m³#9 Zaventem: 4.7 µg/m³#10 Stabroek: 4.7 µg/m³#11 Beveren: 4.7 µg/m³#8 Zwijndrecht: 4.8 µg/m³#7 Gent: 5.1 µg/m³#6 Grimbergen: 5.4 µg/m³#5 Hasselt: 5.5 µg/m³#3 Genk: 5.9 µg/m³#4 Antwerp: 5.9 µg/m³#2 Houthalen: 6.1 µg/m³#1 Izegem: 7.4 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Izegem 7.4 µg/m³ 15 µg/m³ WHO 24-hour guideline0
Every measured city in Flanders, Belgium, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Izegem 410.5×
  2. 2Houthalen 340.4×
  3. 3Genk 330.4×
  4. 4Antwerp 330.4×
  5. 5Hasselt 310.4×
  6. 6Grimbergen 300.4×
  7. 7Gent 280.3×
  8. 8Zwijndrecht 270.3×
  9. 9Zaventem 260.3×
  10. 10Stabroek 260.3×
  11. 11Beveren 260.3×
  12. 12Evergem 260.3×
  13. 13Aarschot 250.3×
  14. 14Menen 240.3×
  15. 15Knokke-Heist 240.3×
  16. 16Kortrijk 230.3×
  17. 17Roeselare 220.3×
  18. 18Maldegem 210.2×
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

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 24 hours to 2 Oct 2026, 06:00 UTC, smogrank.com/be/region/flanders.

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Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.