Worst air pollution Sønderborg, today and tomorrow
Today (16 July): Air quality in Sønderborg is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (NO2: 21.3/100).
Tomorrow (17 July 2026): Air quality in Sønderborg is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 26.2/100). 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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Sønderborg's air quality benefits from its position on the narrow Als Sound, where water on both sides usually keeps local emissions moving. Cross-border traffic toward Germany and ferry-linked freight are the main local sources, though the town's compact scale keeps concentrations well below those of Denmark's larger cities.
Today - 16 July | Pollution peaks at 05:00
AQI:
Fair
21.3/100
PM2.5 (fine particles):
Good
5.7/100
PM10 (coarse particles):
Good
1.8/100
NO2 (nitrogen dioxide):
Fair
21.3/100
O3 (ozone):
Fair
21.0/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
6.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Fair
26.2/100
PM2.5 (fine particles):
Good
5.5/100
PM10 (coarse particles):
Good
1.7/100
NO2 (nitrogen dioxide):
Good
14.1/100
O3 (ozone):
Fair
26.2/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
6.5/100
Pollen forecast in Sønderborg
View pollen forecastSports venues in Sønderborg
Frequently Asked Questions
Is air quality bad in Sønderborg right now?
On 16 July 2026, overall air quality in Sønderborg is fair. AQI is the main air quality indicator at 21.3/100. Pollution peaks around 5:00 AM (NO2: 21.3/100).
Will air quality be worse tomorrow in Sønderborg?
On 17 July 2026, air quality conditions in Sønderborg will be similar to today, with AQI forecast at fair at 26.2/100. Pollution peaks around 4:00 PM (O3: 26.2/100).
When is air pollution at its worst in Sønderborg?
Sønderborg's air quality dips are tied mainly to cross-border traffic toward Germany and ferry-linked freight, though water on both sides of the narrow Als Sound usually keeps local emissions moving fairly well.
Are air quality levels in Sønderborg 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.
Want to see air quality forecasts for other cities in Denmark?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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