SmogRank / World / Belgium / Flanders / October 2026

Most polluted cities in Flanders, Belgium, October 2026

23 cities in Flanders, Belgium ranked by their average PM2.5 so far (5 of 31 days). Worst: Houthalen at 11.1 µg/m³, #382 of 2,246 cities in the world. Cleanest: Damme at 6.4. 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.

← Houthalen 0% 0.75%0

Every city in Flanders, Belgium ranked for October 2026, 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.

1Houthalen
0%
2Meulebeke
0%
3Antwerp
0%
4Gingelom
0%
5Genk
0%
6Mechelen
0%
7Gent
0%
8Hasselt
0%
9Melsele
0%
10Grimbergen
0%
11Aarschot
0%
12Knokke-Heist
0%
13Zaventem
0%
13Kortrijk
0%
13Beveren
0%
16Mol
0%
17Roeselare
0%
17Menen
0%
19Ertvelde
0%
20Stabroek
0%
21Kapellen
0%
22Evergem
0%
23Damme
0%

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, October 2026 · All cities in Belgium, October 2026 · Flanders now

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SmogRank, most polluted cities in Flanders, Belgium, PM2.5, October 2026 (so far), smogrank.com/be/region/flanders/history/2026-10 (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.