Air Quality in Hennef (Sieg), Germany

Clear
26.2°C · 28.5% humidity
26.2°
Feels 26.2°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
7 12am
27
10
25 3am
27
27
27 6am
27
27
27 9am
7
7
0 12pm
0
0
0 3pm
0
0
0 6pm
0
0
7 9pm
7
7
Station readings
8
8
10
CAMS model adj -27
34
54
54
54
54
54
54
54
54
54
34
34
27
27
27
27
27
27
27
27
27
34
34
34
AD 728×90

Air Quality Index Trend

47h · 2 stn

Hennef (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.

28.5%
Humidity
39.4 km/h
Wind W
1012.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
5.95 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Hennef (Sieg)?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.55.95 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
5.95
Median
6.55
Average
4.5
Low
8.6
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +1.1

What is the 7-day forecast for Hennef (Sieg)?

08-03
36.6° 19.9°
08-04
27.1° 13.8°
0.56 mm
08-05
28.2° 15.6°
0.19 mm
08-06
25.9° 18.2°
6.06 mm
08-07
33.2° 15.3°
2.25 mm
08-08
26.2° 13.4°
2.63 mm
08-09
22.2° 12.8°
Both models agree Avg diff: 4.6°C

Where are air quality stations near Hennef (Sieg)?

12
Bonn
18.1 km 17.0°C 52.0% RH PM2.5: 3.0 µg/m³ PM10: 5.0 µg/m³
14
Köln-Rodenkirchen, Germany
24.5 km PM2.5: 3.4 µg/m³
36
Köln-Rodenkirchen, Germany
24.5 km PM2.5: 8.6 µg/m³
31
Köln-Rodenkirchen, Germany
24.5 km PM2.5: 7.4 µg/m³
18
Köln-Rodenkirchen, Germany
24.5 km PM2.5: 4.3 µg/m³
16
Köln-Rodenkirchen, Germany
24.5 km PM2.5: 3.8 µg/m³
43
Köln Clevischer Ring, Germany
28.6 km PM2.5: 10.3 µg/m³
13
Köln Turiner Straße, Germany
29.8 km PM2.5: 3.1 µg/m³
36
Köln Turiner Straße, Germany
29.8 km PM2.5: 8.6 µg/m³
4
Hansaring
30.4 km PM2.5: 1.0 µg/m³ PM10: 1.0 µg/m³

What cities are near Hennef (Sieg)?

23 Siegburg 24 Sankt Augustin 24 Lohmar 23 Troisdorf 23 Eitorf 20 Königswinter 20 Bonn 24 Rösrath 21 Bad Honnef 22 Much
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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 2026-08-08T01:58 UTC.