Worst air pollution Aarhus, today and tomorrow
Today (24 August): Air quality in Aarhus is moderate. AQI and NO2 are moderate; O3 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 54.8/100).
Tomorrow (25 August 2026): Air quality in Aarhus is poor. AQI worsens to poor; NO2 increases to poor; O3 decreases to good; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 AM (NO2: 63.5/100). Airmine updates local air quality forecasts four times daily.
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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 - 24 August | Pollution peaks at 23:00
AQI:
Moderate
54.8/100
PM2.5 (fine particles):
Good
12.0/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Moderate
54.8/100
O3 (ozone):
Fair
22.7/100
SO2 (sulfur dioxide):
Good
4.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
12.2/100
Levels show the poorest local air quality during the day
Tomorrow - 25 August | Pollution peaks at 03:00
AQI:
Poor
63.5/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Poor
63.5/100
O3 (ozone):
Good
19.9/100
SO2 (sulfur dioxide):
Good
5.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Fair
22.3/100
Pollen forecast in Aarhus
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Frequently Asked Questions
Is air quality bad in Aarhus right now?
On 24 August 2026, overall air quality in Aarhus is moderate. AQI is the main air quality indicator at 54.8/100. Pollution peaks around 11:00 PM (NO2: 54.8/100).
Will air quality be worse tomorrow in Aarhus?
On 25 August 2026, air quality conditions in Aarhus will be worse than today, with AQI forecast at poor at 63.5/100. Pollution peaks around 3:00 AM (NO2: 63.5/100).
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: 24 August 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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