Worst air pollution Sagene - Oslo, today and tomorrow
Today (20 September): Air quality in Sagene is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 14.6/100).
Tomorrow (21 September 2026): Air quality in Sagene is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 28.4/100). Airmine updates local air quality forecasts four times daily.
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Oslo's Sagene and the Akerselva river corridor record moderate air quality for inner Oslo, with the linear riverside park providing a green ventilation corridor through this formerly industrial neighbourhood. Traffic on surrounding streets keeps baseline NO₂ at typical inner Oslo levels, improving on days with southwesterly winds.
Today - 20 September | Pollution peaks at 17:00
AQI:
Good
14.6/100
PM2.5 (fine particles):
Good
2.3/100
PM10 (coarse particles):
Good
1.5/100
NO2 (nitrogen dioxide):
Good
12.5/100
O3 (ozone):
Good
14.6/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
1.5/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 23:00
AQI:
Fair
28.4/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Fair
28.4/100
O3 (ozone):
Good
15.2/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Good
7.5/100
Other Landmarks in Oslo
Sports venues in Oslo
Frequently Asked Questions
Is air quality bad in Sagene right now?
On 20 September 2026, overall air quality in Sagene is good. AQI is the main air quality indicator at 14.6/100. Pollution peaks around 5:00 PM (O3: 14.6/100).
Will air quality be worse tomorrow in Sagene?
On 21 September 2026, air quality conditions in Sagene will be worse than today, with AQI forecast at fair at 28.4/100. Pollution peaks around 11:00 PM (NO2: 28.4/100).
When is air pollution at its worst in Sagene?
Air quality in Sagene is least favourable during cold snaps when wood-burning stoves run hardest, when wood-burning smoke combines with traffic emissions on still winter days. Once the wind returns, conditions here usually clear fairly quickly. Otherwise, Sagene maintains good air quality across most of the calendar.
Are air quality levels in Sagene 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: 20 September 2026 at 14:33 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.
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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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