Air Quality in Siegen, Germany
Clear
17.9°C · 43.6% humidity
17.9°
Feels 17.9°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Siegen's air quality — share it
AQI Forecast
Calibrated
20
9am
20
22
19
12pm
22
22
22
3pm
22
22
22
6pm
22
22
22
9pm
29
29
29
12am
29
29
29
3am
49
49
49
6am
61
61
Station readings
20
20
18
16
CAMS model
adj -5
25
25
27
27
27
27
27
27
27
27
27
27
27
34
34
34
34
34
34
54
54
54
66
66
Air Quality Index Trend
41h · 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.
43.6%
Humidity
28.0 km/h
Wind WSW
1020.8 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
4.62 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Siegen?
Temperature & Precipitation
PM2.5 Trend
41h · 1 stationPM2.54.62 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
Station readings (3 stations within 25 km)
4.62
Median
4.63
Average
4.3
Low
4.8
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +1.6
What is the 7-day forecast for Siegen?
09-05
17.9° 8.1°
0.25 mm
09-06
19.1° 11.1°
4.56 mm
09-07
16.7° 10.3°
17.25 mm
09-08
19.9° 11.3°
2.69 mm
09-09
12.5° 7.2°
1.38 mm
09-10
19.7° 8.8°
09-11
15.3° 6.9°
3.38 mm
Both models agree
Avg diff: 2.9°C
Where are air quality stations near Siegen?
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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 2026-09-05T10:55 UTC.