Worst air pollution Slagelse, today and tomorrow
Today (16 July): Air quality in Slagelse 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: 33.3/100).
Tomorrow (17 July 2026): Air quality in Slagelse is fair. All pollutants stay as today. Pollution peaks around 6:00 PM (O3: 27.6/100). 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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Slagelse's inland, landlocked position means it lacks the maritime ventilation most Danish towns rely on, so local traffic and the town's role as a regional retail and logistics hub can leave emissions lingering slightly longer on windless days. Conditions are still generally favourable compared with larger Danish cities.
Today - 16 July | Pollution peaks at 05:00
AQI:
Fair
33.3/100
PM2.5 (fine particles):
Good
7.3/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Fair
33.3/100
O3 (ozone):
Fair
24.9/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.7/100
PM1 (ultrafine particles):
Good
9.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 18:00
AQI:
Fair
27.6/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Fair
22.6/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
8.6/100
Pollen forecast in Slagelse
View pollen forecastFrequently Asked Questions
Is air quality bad in Slagelse right now?
On 16 July 2026, overall air quality in Slagelse is fair. AQI is the main air quality indicator at 33.3/100. Pollution peaks around 5:00 AM (NO2: 33.3/100).
Will air quality be worse tomorrow in Slagelse?
On 17 July 2026, air quality conditions in Slagelse will be similar to today, with AQI forecast at fair at 27.6/100. Pollution peaks around 6:00 PM (O3: 27.6/100).
When is air pollution at its worst in Slagelse?
Slagelse's air quality dips are tied mainly to local traffic and the town's role as a regional retail and logistics hub, made slightly more persistent by its inland, landlocked position without any maritime ventilation to rely on.
Are air quality levels in Slagelse 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