Worst air pollution Halden, today and tomorrow
Today (16 July): Air quality in Halden is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 34.2/100).
Tomorrow (17 July 2026): Air quality in Halden is fair. All pollutants stay as today. Pollution peaks around 4:00 PM (O3: 34.4/100). 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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Halden's river valley position can trap cold air on still winter days, allowing residential wood-smoke to linger locally, though through-traffic on the E6 toward the Swedish border is the more constant year-round source.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
34.2/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
16.7/100
O3 (ozone):
Fair
34.2/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
10.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Fair
34.4/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
14.5/100
O3 (ozone):
Fair
34.4/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
9.9/100
Pollen forecast in Halden
View pollen forecastFrequently Asked Questions
Is air quality bad in Halden right now?
On 16 July 2026, overall air quality in Halden is fair. AQI is the main air quality indicator at 34.2/100. Pollution peaks around 3:00 PM (O3: 34.2/100).
Will air quality be worse tomorrow in Halden?
On 17 July 2026, air quality conditions in Halden will be similar to today, with AQI forecast at fair at 34.4/100. Pollution peaks around 4:00 PM (O3: 34.4/100).
When is air pollution at its worst in Halden?
Air quality in Halden is least favourable when wood-smoke and still air combine in winter, when calm, low-lying terrain can hold smoke and traffic fumes close to town. Once winds pick up again, conditions here usually clear quickly. For the rest of the year, Halden typically sees consistently good air quality.
Are air quality levels in Halden 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