SmogRank / World / Belgium / Flanders / May 2023

Most unhealthy days in Flanders, Belgium, May 2023

20 cities in Flanders, Belgium ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Meulebeke, Belgium, 0 of 31 measured days. 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.

← Meulebeke 0% 0.75%0
Every city in Flanders, Belgium ranked for May 2023, 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. 1Meulebeke
    0 of 31
  2. 2Evergem
    0 of 31
  3. 3Waregem
    0 of 26
  4. 3Kortrijk
    0 of 31
  5. 5Menen
    0 of 31
  6. 6Roeselare
    0 of 31
  7. 7Antwerp
    0 of 31
  8. 8Damme
    0 of 31
  9. 9Veurne
    0 of 31
  10. 9Melsele
    0 of 28
  11. 9Grimbergen
    0 of 26
  12. 9Beveren
    0 of 29
  13. 13Kapellen
    0 of 31
  14. 13Gingelom
    0 of 31
  15. 15Willebroek
    0 of 31
  16. 15Gent
    0 of 31
  17. 17Aarschot
    0 of 27
  18. 18Zelzate
    0 of 31
  19. 19Mol
    0 of 31
  20. 20Stabroek
    0 of 31
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

All cities in the world, May 2023 · All cities in Belgium, May 2023 · Flanders now

Use this board

SmogRank, most polluted cities in Flanders, Belgium, by unhealthy days, PM2.5, May 2023, smogrank.com/be/region/flanders/history/2023-05?by=days (accessed 7 Oct 2026).

Download top 10 by average (PNG)

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.