Air Quality in Siegen, Germany
Clear
21.7°C · 46.8% humidity
21.7°
Feels 21.7°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Siegen's air quality — share it
AQI Forecast
Calibrated
34
11pm
41
41
35
2am
37
38
39
5am
39
33
33
8am
33
34
34
11am
32
32
32
2pm
34
34
34
5pm
34
34
34
8pm
41
41
Station readings
37
38
40
39
CAMS model
adj +7
27
34
34
34
34
34
34
34
27
27
27
27
27
25
25
25
27
27
27
27
27
27
34
34
Air Quality Index Trend
29h · 1 stnSiegen'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.
46.8%
Humidity
19.0 km/h
Wind WNW
1013.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.46 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Siegen?
Temperature & Precipitation
PM2.5 Trend
29h · 1 stationPM2.58.46 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
8.46
Median
8.33
Average
6.5
Low
10.1
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -1.4
What is the 7-day forecast for Siegen?
08-03
32.2° 18.5°
08-04
22.9° 12.1°
1.25 mm
08-05
24.7° 11.7°
0.06 mm
08-06
20.6° 16.0°
6.31 mm
08-07
32.4° 12.9°
0.81 mm
08-08
21.5° 11.7°
2.87 mm
08-09
19.4° 9.3°
0.06 mm
Both models agree
Avg diff: 4.6°C
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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 2026-08-08T00:54 UTC.