Worst air pollution Ulefoss, today and tomorrow
Today (9 August): Air quality in Ulefoss is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 33.5/100).
Tomorrow (10 August 2026): Air quality in Ulefoss is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 26.8/100). Airmine updates local air quality forecasts four times daily.
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Ulefoss is the main town in Nome municipality on the Norsjø lake in Telemark, with vehicle traffic and the industrial heritage and services corridor contributing local sources. Consistent Norsjø lake breezes provide background ventilation and Ulefoss generally maintains moderate to good conditions throughout most of the year.
Today - 9 August | Pollution peaks at 18:00
AQI:
Fair
33.5/100
PM2.5 (fine particles):
Good
10.8/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
10.2/100
O3 (ozone):
Fair
33.5/100
SO2 (sulfur dioxide):
Good
4.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
8.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Fair
26.8/100
PM2.5 (fine particles):
Good
5.2/100
PM10 (coarse particles):
Good
1.8/100
NO2 (nitrogen dioxide):
Good
10.3/100
O3 (ozone):
Fair
26.8/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
4.8/100
Pollen forecast in Ulefoss
View pollen forecastFrequently Asked Questions
Is air quality bad in Ulefoss right now?
On 9 August 2026, overall air quality in Ulefoss is fair. AQI is the main air quality indicator at 33.5/100. Pollution peaks around 6:00 PM (O3: 33.5/100).
Will air quality be worse tomorrow in Ulefoss?
On 10 August 2026, air quality conditions in Ulefoss will be similar to today, with AQI forecast at fair at 26.8/100. Pollution peaks around 12:00 AM (O3: 26.8/100).
When is air pollution at its worst in Ulefoss?
Locally, Ulefoss's air is most affected during calm high-pressure spells in winter, when wood-smoke and traffic combine on calm winter days over the low-lying terrain. Conditions typically improve again once the fjord breeze returns. Outside these periods, air quality in Ulefoss is generally good.
Are air quality levels in Ulefoss 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: 10 August 2026 at 02:34 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.
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