Worst air pollution Assen, today and tomorrow
Today (20 September): Air quality in Assen is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (PM10: 18.2/100).
Tomorrow (21 September 2026): Air quality in Assen is good. All pollutants stay as today. Pollution peaks around 11:00 AM (PM10: 16.8/100). 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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Assen's air quality is generally good, benefiting from the flat Drenthe peat landscape providing reasonable dispersal and consistent North Sea westerlies from the Dutch coast. Vehicle traffic on the A28 motorway and surrounding agricultural and light manufacturing industry contribute local sources, while the flat Dutch terrain allows reasonable dispersal on most days and Assen generally maintains moderate Dutch urban air quality levels with the surrounding Drenthe countryside providing a relatively clean background.
Today - 20 September | Pollution peaks at 11:00
AQI:
Good
18.2/100
PM2.5 (fine particles):
Good
12.6/100
PM10 (coarse particles):
Good
18.2/100
NO2 (nitrogen dioxide):
Good
7.7/100
O3 (ozone):
Good
15.0/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
1.5/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 11:00
AQI:
Good
16.8/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
16.8/100
NO2 (nitrogen dioxide):
Good
9.3/100
O3 (ozone):
Good
14.9/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
1.7/100
Pollen forecast in Assen
View pollen forecastFrequently Asked Questions
Is air quality bad in Assen right now?
On 20 September 2026, overall air quality in Assen is good. AQI is the main air quality indicator at 18.2/100. Pollution peaks around 11:00 AM (PM10: 18.2/100).
Will air quality be worse tomorrow in Assen?
On 21 September 2026, air quality conditions in Assen will be similar to today, with AQI forecast at good at 16.8/100. Pollution peaks around 11:00 AM (PM10: 16.8/100).
When is air pollution at its worst in Assen?
Around Assen, the clearest air quality dips tend to come when birch, oak, and pine pollen peaks through spring and into early summer, or on calm, warm days when traffic on the A28 and local industry emissions accumulate; surrounding forest and heath keep the air notably clean most of the year. Outside these windows, Assen generally stays close to the national average for air quality.
Are air quality levels in Assen 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: 20 September 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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