Worst air pollution Halle, today and tomorrow
Today (9 August): Air quality in Halle is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 52.0/100).
Tomorrow (10 August 2026): Air quality in Halle is fair. AQI worsens to fair; NO2 decreases to good; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 30.0/100). Airmine updates local air quality forecasts four times daily.
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Halle, on the Senne river plain south of Brussels, sees vehicle traffic and Brussels commuter routes as its principal air quality driver. The Vlaams-Brabant terrain shapes local dispersion, and while breezy, unsettled weather usually brings swift improvement, prolonged calm periods can let pollutant levels climb noticeably.
Today - 9 August | Pollution peaks at 16:00
AQI:
Medium
52.0/100
PM2.5 (fine particles):
Good
11.0/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Fair
31.9/100
O3 (ozone):
Medium
52.0/100
SO2 (sulfur dioxide):
Good
6.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
15.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:00
AQI:
Fair
30.0/100
PM2.5 (fine particles):
Good
10.1/100
PM10 (coarse particles):
Good
5.1/100
NO2 (nitrogen dioxide):
Good
19.3/100
O3 (ozone):
Fair
30.0/100
SO2 (sulfur dioxide):
Good
4.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.2/100
PM1 (ultrafine particles):
Good
8.3/100
Pollen forecast in Halle
View pollen forecastFrequently Asked Questions
Is air quality bad in Halle right now?
On 9 August 2026, overall air quality in Halle is fair. NO2 is the main pollutant at 31.9/100. Pollution peaks around 4:00 PM (O3: 52.0/100).
Will air quality be worse tomorrow in Halle?
On 10 August 2026, air quality conditions in Halle will be similar to today, with AQI forecast at fair at 30.0/100. Pollution peaks around 2:00 PM (O3: 30.0/100).
When is air pollution at its worst in Halle?
Watch for reduced air quality in Halle around oak and hornbeam pollen peaks and during vehicle traffic and Brussels commuter routes; conditions elsewhere in the Vlaams-Brabant calendar are usually noticeably better, especially once the weather turns more active.
Are air quality levels in Halle 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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