Highest air pollution Heerlen, today and tomorrow
Today (30 June): Air quality in Heerlen is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 37.7/100).
Tomorrow (1 July 2026): Air quality in Heerlen is fair. All pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 39.0/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Heerlen's air quality reflects the South Limburg coalfield legacy in the Netherlands-Germany-Belgium tri-border region, with vehicle traffic on the A76 and surrounding post-industrial and healthcare industry contributing local sources. The Vaalserberg hills create topographic variation, while the broader Aachen-Liège industrial corridor elevates regional background PM2.5 above typical Dutch levels and winter residential heating contributes seasonal variation throughout the year.
Today - 30 June | Pollution peaks at 17:00
AQI:
Fair
37.7/100
PM2.5 (fine particles):
Good
11.6/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
23.4/100
O3 (ozone):
Fair
37.7/100
SO2 (sulfur dioxide):
Good
4.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
8.8/100
Levels show the poorest local air quality during the day
Tomorrow - 1 July | Pollution peaks at 05:00
AQI:
Fair
39.0/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
39.0/100
O3 (ozone):
Fair
36.9/100
SO2 (sulfur dioxide):
Good
6.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
15.2/100
Pollen forecast in Heerlen
View pollen forecastFrequently Asked Questions
Is air quality bad in Heerlen right now?
On 30 June 2026, overall air quality in Heerlen is fair. AQI is the main air quality indicator at 37.7/100. Pollution peaks around 5:00 PM (O3: 37.7/100).
Will air quality be worse tomorrow in Heerlen?
On 1 July 2026, air quality conditions in Heerlen will be similar to today, with AQI forecast at fair at 39.0/100. Pollution peaks around 5:00 AM (NO2: 39.0/100).
Are air quality levels in Heerlen 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: 30 June 2026 at 12:38 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team