Worst air pollution Skien, today and tomorrow
Today (16 July): Air quality in Skien is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 32.6/100).
Tomorrow (17 July 2026): Air quality in Skien is fair. All pollutants stay as today. Pollution peaks around 4:00 PM (O3: 35.1/100). 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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Skien's air quality reflects the Telemark plateau in the Porsgrunn-Skien metropolitan area, with vehicle traffic on the E18 and surrounding Norsk Hydro magnesium and ferroalloy operations contributing elevated industrial PM2.5 alongside vehicle sources. The Eidangerfjord provides maritime ventilation, while the Telemark highland's topographic variation and the industrial character of the Porsgrunn corridor represent the most distinctive local air quality influences in this major Norwegian industrial valley throughout the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
32.6/100
PM2.5 (fine particles):
Good
7.1/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
32.6/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
13.3/100
PM1 (ultrafine particles):
Good
7.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Fair
35.1/100
PM2.5 (fine particles):
Good
7.6/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
35.1/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
7.7/100
Pollen forecast in Skien
View pollen forecastFrequently Asked Questions
Is air quality bad in Skien right now?
On 16 July 2026, overall air quality in Skien is fair. AQI is the main air quality indicator at 32.6/100. Pollution peaks around 12:00 PM (O3: 32.6/100).
Will air quality be worse tomorrow in Skien?
On 17 July 2026, air quality conditions in Skien will be similar to today, with AQI forecast at fair at 35.1/100. Pollution peaks around 4:00 PM (O3: 35.1/100).
When is air pollution at its worst in Skien?
People in Skien tend to notice the biggest change in air quality during short stretches of calm winter weather, when calm, low-lying terrain can hold smoke and traffic fumes close to town. Oslofjord-influenced airflow generally restores good conditions within a day or so. Most of the year, conditions in Skien stay comfortably within normal ranges.
Are air quality levels in Skien 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 Norway?
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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