Worst air pollution Liège, today and tomorrow
Today (16 July): Air quality in Liège is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 57.3/100).
Tomorrow (17 July 2026): Air quality in Liège is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 52.6/100). 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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Liège's air quality reflects its position in the Meuse valley at the heart of Belgium's former industrial heartland, with the legacy Arcelor steel operations and the surrounding chemical and metal manufacturing industry generating elevated industrial emissions alongside vehicle traffic on the E25 and E40 motorways. The Meuse valley's topographic enclosure between the Ardennes and the Hesbaye plateau concentrates industrial and vehicle emissions under frequent temperature inversions in this historic Walloon industrial city.
Today - 16 July | Pollution peaks at 18:00
AQI:
Medium
57.3/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Fair
21.7/100
O3 (ozone):
Medium
57.3/100
SO2 (sulfur dioxide):
Good
6.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
11.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
52.6/100
PM2.5 (fine particles):
Good
10.9/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Fair
26.4/100
O3 (ozone):
Medium
52.6/100
SO2 (sulfur dioxide):
Good
2.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
14.3/100
Pollen forecast in Liège
View pollen forecastSports venues in Liège
Frequently Asked Questions
Is air quality bad in Liège right now?
On 16 July 2026, overall air quality in Liège is fair. NO2 is the main pollutant at 21.7/100. Pollution peaks around 6:00 PM (O3: 57.3/100).
Will air quality be worse tomorrow in Liège?
On 17 July 2026, air quality conditions in Liège will be similar to today, with NO2 forecast at fair at 26.4/100. Pollution peaks around 3:00 PM (O3: 52.6/100).
When is air pollution at its worst in Liège?
In Liège, reduced air quality is most noticeable when oak and linden pollen peaks, and on days affected by the legacy Arcelor steel operations and the local chemical and metal manufacturing industry; the clearest air tends to follow a change in wind direction or rainfall here.
Are air quality levels in Liège 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.
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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