Worst air pollution Ahlen, today and tomorrow

Today (21 July): Air quality in Ahlen is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 27.1/100).
Tomorrow (22 July 2026): Air quality in Ahlen is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 20.1/100). 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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Ahlen's air quality reflects the flat Westphalian plain in the Rhine-Ruhr eastern zone, with vehicle traffic on the A2 motorway and surrounding manufacturing legacy industry contributing local sources. The flat North Rhine-Westphalian plain provides reasonable dispersal while the broader Ruhr industrial background elevates baseline PM2.5 and consistent Atlantic westerlies provide the primary ventilation.

Today - 21 July | Pollution peaks at 17:00

AQI:

Fair

27.1/100

PM2.5 (fine particles):

Good

5.8/100

PM10 (coarse particles):

Good

2.3/100

NO2 (nitrogen dioxide):

Good

4.4/100

O3 (ozone):

Fair

27.1/100

SO2 (sulfur dioxide):

Good

0.4/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

2.3/100

PM1 (ultrafine particles):

Good

4.2/100

Levels show the poorest local air quality during the day

Tomorrow - 22 July | Pollution peaks at 15:00

AQI:

Fair

20.1/100

PM2.5 (fine particles):

Good

6.3/100

PM10 (coarse particles):

Good

2.2/100

NO2 (nitrogen dioxide):

Good

4.6/100

O3 (ozone):

Fair

20.1/100

SO2 (sulfur dioxide):

Good

0.9/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

2.1/100

PM1 (ultrafine particles):

Good

5.6/100

Pollen forecast in Ahlen

View pollen forecast

Frequently Asked Questions

Is air quality bad in Ahlen right now?

On 21 July 2026, overall air quality in Ahlen is fair. AQI is the main air quality indicator at 27.1/100. Pollution peaks around 5:00 PM (O3: 27.1/100).

Will air quality be worse tomorrow in Ahlen?

On 22 July 2026, air quality conditions in Ahlen will be similar to today, with AQI forecast at fair at 20.1/100. Pollution peaks around 3:00 PM (O3: 20.1/100).

When is air pollution at its worst in Ahlen?

In Ahlen, the days to watch are when maple, ash, and birch pollen peaks, or still, humid days when emissions linger locally; traffic on nearby roads is a modest local source. This part of Germany typically experiences only light ragweed levels overall. Fresh air tends to follow a change in wind direction here.

Are air quality levels in Ahlen 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 Germany?

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Data provided by Airmine — Last update: 21 July 2026 at 16:20 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