Worst air pollution Cologne, today and tomorrow
Today (23 August): Air quality in Cologne is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 26.5/100).
Tomorrow (24 August 2026): Air quality in Cologne is fair. All pollutants stay as today. Pollution peaks around 6:00 AM (NO2: 33.4/100). 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.
Cologne's air quality is shaped by its position in the Rhine corridor at the heart of the Rhine-Ruhr conurbation, with vehicle emissions from the ring road and the broader Ruhr industrial complex contributing elevated NO₂ and PM2.5. The Rhine valley provides ventilation on westerly winds, while the flat Lower Rhine plain allows reasonable dispersal on most wind days.
Today - 23 August | Pollution peaks at 23:00
AQI:
Fair
26.5/100
PM2.5 (fine particles):
Good
12.1/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Fair
26.5/100
O3 (ozone):
Fair
23.8/100
SO2 (sulfur dioxide):
Good
4.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
12.7/100
Levels show the poorest local air quality during the day
Tomorrow - 24 August | Pollution peaks at 06:00
AQI:
Fair
33.4/100
PM2.5 (fine particles):
Good
14.0/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Fair
33.4/100
O3 (ozone):
Fair
31.6/100
SO2 (sulfur dioxide):
Good
8.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
15.5/100
Pollen forecast in Cologne
View pollen forecastFrequently Asked Questions
Is air quality bad in Cologne right now?
On 23 August 2026, overall air quality in Cologne is fair. AQI is the main air quality indicator at 26.5/100. Pollution peaks around 11:00 PM (NO2: 26.5/100).
Will air quality be worse tomorrow in Cologne?
On 24 August 2026, air quality conditions in Cologne will be similar to today, with AQI forecast at fair at 33.4/100. Pollution peaks around 6:00 AM (NO2: 33.4/100).
When is air pollution at its worst in Cologne?
Air quality dips in Cologne mostly track linden, poplar, and ash pollen peaks and windless summer days when pollutants accumulate nearby; everyday driving through the area contributes a modest amount. Ragweed is generally a minor factor here compared with warmer parts of Germany. The clearest air tends to arrive after rain or on breezy afternoons.
Are air quality levels in Cologne 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?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 23 August 2026 at 20:25 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.
Get the full experience in the Airmine app.