SmogRank / Cleaner or dirtier / Belgium
Belgium: cleaner or dirtier, 2025
In Belgium, 40 cities have enough days in both years to compare 2025 with the same days of 2024: 37 got dirtier and 3 cleaner.
The 37 cities that got dirtier, biggest rise first
| # | City | 2024 | 2025 | Change |
|---|---|---|---|---|
| 1 | RoeselareFlanders, Belgium | 54 | 59 | +2.5 µg/m³+23% |
| 2 | KoksijdeFlanders, Belgium | 50 | 55 | +2.3 µg/m³+26% |
| 3 | VeurneFlanders, Belgium | 50 | 55 | +2.3 µg/m³+26% |
| 4 | MenenFlanders, Belgium | 54 | 58 | +2.0 µg/m³+18% |
| 5 | MonsWallonia, Belgium | 44 | 52 | +2.0 µg/m³+25% |
| 6 | IzegemFlanders, Belgium | 56 | 60 | +1.9 µg/m³+16% |
| 7 | MeulebekeFlanders, Belgium | 56 | 60 | +1.9 µg/m³+16% |
| 8 | MaldegemFlanders, Belgium | 53 | 56 | +1.8 µg/m³+18% |
| 9 | DammeFlanders, Belgium | 53 | 56 | +1.7 µg/m³+17% |
| 10 | LochristiFlanders, Belgium | 55 | 58 | +1.6 µg/m³+14% |
| 11 | KortrijkFlanders, Belgium | 53 | 56 | +1.5 µg/m³+15% |
| 12 | GentFlanders, Belgium | 53 | 55 | +1.4 µg/m³+14% |
| 13 | HouthalenFlanders, Belgium | 51 | 54 | +1.3 µg/m³+14% |
| 14 | BeverenFlanders, Belgium | 52 | 55 | +1.3 µg/m³+13% |
| 15 | CharleroiWallonia, Belgium | 36 | 43 | +1.2 µg/m³+18% |
| 16 | ZelzateFlanders, Belgium | 55 | 57 | +1.2 µg/m³+11% |
| 17 | GrimbergenFlanders, Belgium | 54 | 57 | +1.2 µg/m³+11% |
| 18 | ZwijndrechtFlanders, Belgium | 53 | 55 | +1.1 µg/m³+11% |
| 19 | MelseleFlanders, Belgium | 52 | 54 | +1.1 µg/m³+11% |
| 20 | StabroekFlanders, Belgium | 54 | 56 | +1.0 µg/m³+9% |
| 21 | WillebroekFlanders, Belgium | 51 | 53 | +1.0 µg/m³+11% |
| 22 | AntwerpFlanders, Belgium | 53 | 55 | +0.9 µg/m³+9% |
| 23 | HasseltFlanders, Belgium | 51 | 53 | +0.8 µg/m³+9% |
| 24 | BertrixWallonia, Belgium | 21 | 25 | +0.8 µg/m³+22% |
| 25 | KapellenFlanders, Belgium | 52 | 54 | +0.8 µg/m³+8% |
| 26 | Flémalle-HauteWallonia, Belgium | 37 | 41 | +0.7 µg/m³+11% |
| 27 | CouvinWallonia, Belgium | 25 | 29 | +0.7 µg/m³+16% |
| 28 | Habay-la-VieilleWallonia, Belgium | 23 | 27 | +0.7 µg/m³+17% |
| 29 | VielsalmWallonia, Belgium | 19 | 23 | +0.7 µg/m³+21% |
| 30 | GingelomFlanders, Belgium | 46 | 50 | +0.7 µg/m³+8% |
| 31 | NamurWallonia, Belgium | 29 | 33 | +0.6 µg/m³+11% |
| 32 | LiègeWallonia, Belgium | 37 | 40 | +0.5 µg/m³+7% |
| 33 | AarschotFlanders, Belgium | 52 | 52 | +0.3 µg/m³+3% |
| 34 | Marche-en-FamenneWallonia, Belgium | 28 | 29 | +0.2 µg/m³+4% |
| 35 | HamoisWallonia, Belgium | 28 | 29 | +0.2 µg/m³+4% |
| 36 | TournaiWallonia, Belgium | 44 | 46 | +0.2 µg/m³+2% |
| 37 | MolFlanders, Belgium | 53 | 53 | +0.1 µg/m³+1% |
The 3 cities that got cleaner, biggest fall first
| # | City | 2024 | 2025 | Change |
|---|---|---|---|---|
| 1 | BrusselsBrussels Capital, Belgium | 52 | 52 | −0.2 µg/m³−2% |
| 2 | ChampionWallonia, Belgium | 39 | 38 | −0.1 µg/m³−1% |
| 3 | AndenneWallonia, Belgium | 39 | 38 | −0.1 µg/m³−1% |
Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.
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
Updated 2026-10-07 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.