Worst air pollution Trondheim, today and tomorrow
Today (16 July): Air quality in Trondheim is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 23.0/100).
Tomorrow (17 July 2026): Air quality in Trondheim is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 17.8/100). 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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Trondheim's air quality is generally good, benefiting from the Trondheimsfjord's maritime ventilation and the surrounding Trøndelag mountains providing clean air from multiple directions. Winter wood burning in residential areas and vehicle traffic on the E6 contribute the primary seasonal PM2.5 and sustained NOₓ sources, while the fjord's consistent tidal airflows provide regular ventilation that prevents the severe inversion-driven episodes seen in Bergen's more enclosed basin geography throughout the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
23.0/100
PM2.5 (fine particles):
Good
7.6/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
4.0/100
O3 (ozone):
Fair
23.0/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.8/100
PM1 (ultrafine particles):
Good
7.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Good
17.8/100
PM2.5 (fine particles):
Good
7.0/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
2.5/100
O3 (ozone):
Good
17.8/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.4/100
PM1 (ultrafine particles):
Good
5.9/100
Pollen forecast in Trondheim
View pollen forecastFrequently Asked Questions
Is air quality bad in Trondheim right now?
On 16 July 2026, overall air quality in Trondheim is fair. AQI is the main air quality indicator at 23.0/100. Pollution peaks around 4:00 PM (O3: 23.0/100).
Will air quality be worse tomorrow in Trondheim?
On 17 July 2026, air quality conditions in Trondheim will be better than today, with AQI forecast at good at 17.8/100. Pollution peaks around 10:00 AM (O3: 17.8/100).
When is air pollution at its worst in Trondheim?
Trondheim sees its most noticeable air quality dips when heavy commuter traffic coincides with calm winter weather, when still winter air over the fjord valley can hold local smoke in place for a day or two. Once the weather turns, air quality here usually recovers within a day. Beyond these episodes, Trondheim's air quality generally stays favourable.
Are air quality levels in Trondheim 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.
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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