Aarhus Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Aarhus is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (PM2.5: 11.9/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Aarhus is good. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 11.0/100).
Explore Forecasts
Pollen & Mold
Air Quality for Neighborhoods
Pollen & AQ for Routes
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 11.9/100 |
| PM2.5 (fine particles) | Good | 11.9/100 |
| PM10 (coarse particles) | Good | 8.3/100 |
| NO2 (nitrogen dioxide) | Good | 6.6/100 |
| O3 (ozone) | Good | 11.7/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 0.9/100 |
| PM1 (ultrafine particles) | Good | 2.4/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 11.0/100 |
| PM2.5 (fine particles) | Good | 10.3/100 |
| PM10 (coarse particles) | Good | 5.4/100 |
| NO2 (nitrogen dioxide) | Good | 7.1/100 |
| O3 (ozone) | Good | 11.0/100 |
| SO2 (sulfur dioxide) | Good | 0.4/100 |
| CO (carbon monoxide) | Good | 0.6/100 |
| HCHO (formaldehyde) | Good | 0.7/100 |
| PM1 (ultrafine particles) | Good | 3.1/100 |
Local Environmental Conditions
The heart of Aarhus is largely built up, so vehicle exhaust and urban activity dominate the local air pollution sources. Breezes off the North Sea usually help ventilate the area. Local sources include port and shipping activity. Home heating, especially wood stoves and fireplaces, adds smoke and fine particles in the colder months. On some days, pollution drifting in from farther away outweighs local sources.
Cold spells from November to April, at around 2°C on average, are when smoke from home heating and traffic lingers longest. Summers are mild, averaging around 17°C in the warmest month, so ozone usually stays moderate even from July to August. Overall, breezy weather in January, with winds near 25 km/h, tends to sweep pollution away.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Air quality forecast neighborhoods 4 neighborhoods
Sports venues in Aarhus 1 sports venue
Local parkruns 1 parkrun
Frequently Asked Questions About Air Quality in Midtjylland
Is air quality bad in Aarhus right now?
On 10 October 2026, overall air quality in Aarhus is good. AQI is the main air quality indicator at 11.9/100. Pollution peaks around 12:00 PM (PM2.5: 11.9/100).
Will air quality be worse tomorrow in Aarhus?
On 11 October 2026, air quality conditions in Aarhus will be similar to today, with AQI forecast at good at 11.0/100. Pollution peaks around 5:00 PM (O3: 11.0/100).
When is air pollution at its worst in Aarhus?
Cold spells from November to April, at around 2°C on average, are when smoke from home heating and traffic lingers longest. Summers are mild, averaging around 17°C in the warmest month, so ozone usually stays moderate even from July to August. Overall, breezy weather in January, with winds near 25 km/h, tends to sweep pollution away.
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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |