SmogRank / World / Belgium / Flanders / 2025

Most polluted cities in Flanders, Belgium, 2025

22 cities in Flanders, Belgium ranked by their average PM2.5 over the 365 days; 22 above the WHO annual guideline (5.0 µg/m³). Worst: Meulebeke at 12.7 µg/m³, #552 of 2,624 cities in the world. Cleanest: Gingelom at 8.4. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Menen 4% 4%0
Every city in Flanders, Belgium ranked for 2025, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Menen
    4%
  2. 2Roeselare
    4%
  3. 3Meulebeke
    3%
  4. 4Damme
    3%
  5. 5Stabroek
    3%
  6. 6Beveren
    3%
  7. 7Grimbergen
    3%
  8. 8Veurne
    3%
  9. 9Zelzate
    2%
  10. 10Kortrijk
    2%
  11. 11Zaventem
    2%
  12. 12Houthalen
    2%
  13. 13Antwerp
    2%
  14. 14Hasselt
    2%
  15. 15Mechelen
    2%
  16. 16Kapellen
    2%
  17. 17Aarschot
    2%
  18. 18Willebroek
    2%
  19. 19Gingelom
    2%
  20. 20Gent
    2%
  21. 21Melsele
    2%
  22. 22Mol
    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

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SmogRank, most polluted cities in Flanders, Belgium, PM2.5, 2025, smogrank.com/be/region/flanders/history/2025 (accessed 6 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.