Worst air pollution Leuven, today and tomorrow
Today (16 July): Air quality in Leuven is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 53.3/100).
Tomorrow (17 July 2026): Air quality in Leuven is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 40.4/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Sitting on the Dijle river plain in Flemish Brabant, Leuven sees vehicle traffic and university-town commuting as the dominant local influence on air quality, while the surrounding Vlaams-Brabant terrain affects how pollutants disperse. Calm, still conditions tend to let levels build here more than in breezier weather, and the local topography around Leuven can trap emissions for longer stretches during stable atmospheric periods.
Today - 16 July | Pollution peaks at 18:00
AQI:
Medium
53.3/100
PM2.5 (fine particles):
Good
6.2/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
13.7/100
O3 (ozone):
Medium
53.3/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
7.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Medium
40.4/100
PM2.5 (fine particles):
Good
8.0/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Fair
20.7/100
O3 (ozone):
Medium
40.4/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.9/100
PM1 (ultrafine particles):
Good
8.3/100
Pollen forecast in Leuven
View pollen forecastFrequently Asked Questions
Is air quality bad in Leuven right now?
On 16 July 2026, overall air quality in Leuven is medium. AQI is the main air quality indicator at 53.3/100. Pollution peaks around 6:00 PM (O3: 53.3/100).
Will air quality be worse tomorrow in Leuven?
On 17 July 2026, air quality conditions in Leuven will be worse than today, with NO2 forecast at fair at 20.7/100. Pollution peaks around 4:00 PM (O3: 40.4/100).
When is air pollution at its worst in Leuven?
birch and plane pollen peaks and periods of vehicle traffic and university-town commuting are the two main triggers for reduced air quality in Leuven; most other times, the Vlaams-Brabant area sees comparatively steady, breathable conditions.
Are air quality levels in Leuven based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in Belgium?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app