Worst air pollution Aarhus, today and tomorrow
Today (4 August): Air quality in Aarhus is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (NO2: 59.1/100).
Tomorrow (5 August 2026): Air quality in Aarhus is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (NO2: 46.0/100). 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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Aarhus's air quality is generally good, benefiting from consistent North Sea and Baltic westerlies providing reliable maritime ventilation across Denmark's second city. The Port of Aarhus container terminal contributes shipping emissions along the harbour corridor, while vehicle traffic on the surrounding motorway network is the primary urban source. The flat Danish coastal plain and consistent Atlantic airflows generally prevent significant pollution accumulation, keeping Aarhus readings among the better values for a major northern European port city.
Today - 4 August | Pollution peaks at 06:00
AQI:
Medium
59.1/100
PM2.5 (fine particles):
Good
14.1/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Medium
59.1/100
O3 (ozone):
Fair
34.4/100
SO2 (sulfur dioxide):
Good
7.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.4/100
PM1 (ultrafine particles):
Good
17.6/100
Levels show the poorest local air quality during the day
Tomorrow - 5 August | Pollution peaks at 07:00
AQI:
Medium
46.0/100
PM2.5 (fine particles):
Good
14.5/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Medium
46.0/100
O3 (ozone):
Fair
28.6/100
SO2 (sulfur dioxide):
Good
6.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
18.2/100
Pollen forecast in Aarhus
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Frequently Asked Questions
Is air quality bad in Aarhus right now?
On 4 August 2026, overall air quality in Aarhus is fair. O3 is the main pollutant at 34.4/100. Pollution peaks around 6:00 AM (NO2: 59.1/100).
Will air quality be worse tomorrow in Aarhus?
On 5 August 2026, air quality conditions in Aarhus will be similar to today, with O3 forecast at fair at 28.6/100. Pollution peaks around 7:00 AM (NO2: 46.0/100).
When is air pollution at its worst in Aarhus?
In Aarhus, air quality most often suffers near the harbour corridor when the Port of Aarhus's container terminal is busiest, combined with motorway traffic feeding the city centre. The flat Danish coastal plain and steady Atlantic airflow keep this from building up for long.
Are air quality levels in Aarhus 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: 4 August 2026 at 16:38 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.
For long term forecasts and maps, see the Airmine app