Worst air pollution Asker, today and tomorrow
Today (16 July): Air quality in Asker is fair. O3 and PM1 are fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 6:00 AM (NO2: 55.9/100).
Tomorrow (17 July 2026): Air quality in Asker is fair. PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 AM (NO2: 40.5/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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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 - 16 July | Pollution peaks at 06:00
AQI:
Medium
55.9/100
PM2.5 (fine particles):
Good
19.3/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Medium
55.9/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.3/100
PM1 (ultrafine particles):
Fair
22.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 02:00
AQI:
Medium
40.5/100
PM2.5 (fine particles):
Good
14.0/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Medium
40.5/100
O3 (ozone):
Fair
34.1/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
15.7/100
Pollen forecast in Asker
View pollen forecastFrequently Asked Questions
Is air quality bad in Asker right now?
On 16 July 2026, overall air quality in Asker is fair. O3 is the main pollutant at 37.6/100. Pollution peaks around 6:00 AM (NO2: 55.9/100).
Will air quality be worse tomorrow in Asker?
On 17 July 2026, air quality conditions in Asker will be similar to today, with O3 forecast at fair at 34.1/100. Pollution peaks around 2:00 AM (NO2: 40.5/100).
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.
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