Air Quality in Hennef (Sieg), Germany
Drizzle
8.7°C · 96.0% humidity
8.7°
Feels 6.8°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Hennef (Sieg)'s air quality — share it
AQI Forecast
Calibrated
4
1am
0
5
10
4am
11
8
6
7am
4
3
2
10am
2
1
1
1pm
1
0
0
4pm
0
0
0
7pm
0
0
0
10pm
0
0
Station readings
11
5
CAMS model
adj -30
34
27
24
24
24
24
24
24
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Air Quality Index Trend
42h · 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.
96.0%
Humidity
12.2 km/h
Wind SW
1019.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
2.27 µg/m³
PM10▲
13.7 µg/m³
050100150200300500
What is the weather forecast for Hennef (Sieg)?
Temperature & Precipitation
PM2.5 Trend
42h · 2 stationsPM2.52.27 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
2.27
Median
2.8
Average
1.0
Low
4.6
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +3.6
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)?
25
Bonn-Auerberg, Germany
20
Bonn-Auerberg, Germany
4
Bonn
13
Köln-Rodenkirchen, Germany
–
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 2026-06-09T02:55 UTC.