Toggle navigation
Places
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
English
Français
Deutsch
日本語
한국어
简体中文
繁體中文
Europe
Germany
North Rhine-Westphalia
Cologne
Rhein-Sieg-Kreis
Hennef
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Hennef
Rhein-Sieg-Kreis, Cologne
2026-07-23 15:00
CAQI (Europe)
Very Low
Pollutants
|
Pollens
PM10
μg/m³
14
PM2.5
μg/m³
7
Grasses
6.0
Mugwort
3.0
Alder
0
Ragweed
0
Birch
0
Olive Tree
0
Weather
℃
℃
℉
24℃
46%
15 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
CAQI (Europe)
CAQI (Europe)
Allergy Risk
PM10
PM2.5
Grasses
Mugwort
Alder
Ragweed
Birch
Olive Tree
Places included
Bröl
AQI 14
Happerschoß
AQI 14
Lanzenbach
AQI 14
Rott
AQI 14
Site 43620
AQI 4
Stoßdorf
AQI 14
Wellesberg
AQI 14
Data Sources
http://www.polleninfo.org
https://www.eea.europa.eu
Get the App
Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.
iPhone, iPad
Android
Scan QR Code to Download App
iOS
Google Play
Download APK
Cities Nearby
Hennef
AQI 14
Eitorf
AQI 14
Kircheib
AQI 14
Neunkirchen-Seelscheid
AQI 14
Siegburg
AQI 14
Sankt Augustin
AQI 14
Asbach
AQI 14
Hirz-Maulsbach
AQI 15
Lohmar
AQI 15
Fiersbach
AQI 15
Windhagen
AQI 14
Air Matters © 2026