Worst air pollution Asker, today and tomorrow
Today (9 August): Air quality in Asker is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 32.4/100).
Tomorrow (10 August 2026): Air quality in Asker is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 AM (O3: 31.2/100). Airmine updates local air quality forecasts four times daily.
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Asker's air quality benefits from the Oslofjord region's maritime ventilation southwest of Oslo, with vehicle traffic on the E18 motorway and the surrounding affluent residential and technology corridor contributing local sources. The Oslofjord's consistent maritime ventilation provides reliable background air quality management, while the surrounding Vestmarka forest provides clean-air buffering and Asker's suburban character generally maintains among the Oslo region's more moderate residential environments throughout most of the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Fair
32.4/100
PM2.5 (fine particles):
Good
8.3/100
PM10 (coarse particles):
Good
2.9/100
NO2 (nitrogen dioxide):
Good
16.4/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
4.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.0/100
PM1 (ultrafine particles):
Good
7.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Fair
31.2/100
PM2.5 (fine particles):
Good
7.4/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Fair
24.5/100
O3 (ozone):
Fair
31.2/100
SO2 (sulfur dioxide):
Good
4.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
7.5/100
Pollen forecast in Asker
View pollen forecastFrequently Asked Questions
Is air quality bad in Asker right now?
On 9 August 2026, overall air quality in Asker is fair. AQI is the main air quality indicator at 32.4/100. Pollution peaks around 11:00 PM (O3: 32.4/100).
Will air quality be worse tomorrow in Asker?
On 10 August 2026, air quality conditions in Asker will be similar to today, with AQI forecast at fair at 31.2/100. Pollution peaks around 12:00 AM (O3: 31.2/100).
When is air pollution at its worst in Asker?
The clearest air quality impact in Asker comes on the calmest, coldest days of winter, when wood-burning smoke combines with traffic emissions on still winter days. Once the wind returns, conditions here usually clear fairly quickly. Most of the year, conditions in Asker stay comfortably within normal ranges.
Are air quality levels in Asker 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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