Worst air pollution Heusden, today and tomorrow

Today (9 August): Air quality in Heusden is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 54.8/100).
Tomorrow (10 August 2026): Air quality in Heusden 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: 29.4/100). Airmine updates local air quality forecasts four times daily.

Get the full experience in the Airmine app.

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.

Heusden's setting on the Campine plain in Limburg means vehicle traffic and former coal-mining legacy drives most of the local variation in air quality across the year. The Limburg terrain nearby can trap emissions under stable conditions, though stronger winds or rainfall usually bring noticeable improvement, and residents typically notice the clearest air during the more unsettled, windier stretches of the year.

Today - 9 August | Pollution peaks at 15:00

AQI:

Medium

54.8/100

PM2.5 (fine particles):

Good

10.8/100

PM10 (coarse particles):

Good

3.4/100

NO2 (nitrogen dioxide):

Fair

34.5/100

O3 (ozone):

Medium

54.8/100

SO2 (sulfur dioxide):

Good

6.4/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

6.6/100

PM1 (ultrafine particles):

Good

15.0/100

Levels show the poorest local air quality during the day

Tomorrow - 10 August | Pollution peaks at 14:00

AQI:

Fair

29.4/100

PM2.5 (fine particles):

Good

9.8/100

PM10 (coarse particles):

Good

3.6/100

NO2 (nitrogen dioxide):

Good

18.5/100

O3 (ozone):

Fair

29.4/100

SO2 (sulfur dioxide):

Good

5.2/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

6.5/100

PM1 (ultrafine particles):

Good

9.6/100

Pollen forecast in Heusden

View pollen forecast

Frequently Asked Questions

Is air quality bad in Heusden right now?

On 9 August 2026, overall air quality in Heusden is fair. NO2 is the main pollutant at 34.5/100. Pollution peaks around 3:00 PM (O3: 54.8/100).

Will air quality be worse tomorrow in Heusden?

On 10 August 2026, air quality conditions in Heusden will be similar to today, with AQI forecast at fair at 29.4/100. Pollution peaks around 2:00 PM (O3: 29.4/100).

When is air pollution at its worst in Heusden?

People in Heusden tend to notice worse air when oak and linden pollen peaks, or because of vehicle traffic and former coal-mining legacy; the remainder of the year in Limburg generally brings clearer, steadier conditions, especially on breezier days that help disperse local emissions across the surrounding countryside and built-up streets alike.

Are air quality levels in Heusden 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.

Want to see air quality forecasts for other cities in Belgium?

Check air quality in other popular cities:

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.

Get the full experience in the Airmine app.