Air Quality in Halden, Norway
Cloudy
9.1°C · 81.0% humidity
9.1°
Feels 4.9°
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Halden's air quality — share it
AQI Forecast
Calibrated
18
10pm
18
18
53
1am
43
38
31
4am
27
25
22
7am
20
19
19
10am
18
18
18
1pm
17
17
17
4pm
17
17
17
7pm
17
17
Station readings
59
CAMS model
adj -7
25
25
25
25
25
27
25
25
25
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
Air Quality Index Trend
4h · 1 stnHalden's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.
81.0%
Humidity
39.5 km/h
Wind N
1008.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
13.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Halden?
Temperature & Precipitation
PM2.5 Trend
4h · 1 stationPM2.513.1 µg/m³
✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
13.1
Median
13.1
Average
10.3
Low
15.9
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -7.1
What is the 7-day forecast for Halden?
07-21
25.3° 13.1°
2.31 mm
07-22
23.4° 9.1°
0.31 mm
07-23
19.0° 14.6°
1.25 mm
07-24
18.4° 13.7°
1.13 mm
07-25
18.2° 9.7°
3.06 mm
07-26
20.6° 11.9°
0.81 mm
07-27
18.1° 12.3°
1.25 mm
Both models agree
Avg diff: 2.3°C
Where are air quality stations near Halden?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T23:43 UTC.