Air Quality in Hennef (Sieg), Germany
Cloudy
11.5°C · 77.9% humidity
11.5°
Feels 11.5°
15
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Hennef (Sieg)'s air quality — share it
AQI Forecast
Calibrated
0
4am
5
0
15
7am
11
8
7
10am
5
4
3
1pm
2
2
2
4pm
2
1
1
7pm
1
1
1
10pm
1
1
1
1am
1
0
Station readings
5
4
5
CAMS model
adj -24
24
24
24
24
24
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
24
Air Quality Index Trend
43h · 2 stnHennef (Sieg)'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.
77.9%
Humidity
15.7 km/h
Wind W
1021.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
3.6 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Hennef (Sieg)?
Temperature & Precipitation
PM2.5 Trend
43h · 2 stationsPM2.53.6 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
3.6
Median
3.86
Average
2.67
Low
4.8
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +2.3
What is the 7-day forecast for Hennef (Sieg)?
06-09
24.7° 8.7°
0.88 mm
06-10
25.6° 11.5°
0.06 mm
06-11
22.7° 15.6°
1.94 mm
06-12
18.1° 10.8°
0.19 mm
06-13
23.6° 8.5°
1.12 mm
06-14
22.8° 11.3°
0.19 mm
06-15
22.7° 10.7°
1.5 mm
Both models agree
Avg diff: 3.8°C
Where are air quality stations near Hennef (Sieg)?
172
Bonn-Auerberg, Germany
20
Bonn-Auerberg, Germany
4
Bonn
12
Köln-Rodenkirchen, Germany
5
Hansaring
What cities are near Hennef (Sieg)?
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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 2026-06-09T05:37 UTC.