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
Bornheim
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Bornheim
Rhein-Sieg-Kreis, Cologne
2026-03-05 20:00
CAQI (Europe)
Low
Pollutants
|
Pollens
PM2.5
μg/m³
16.9
PM10
μg/m³
27.1
Alder
12.0
Ragweed
0
Mugwort
0
Birch
0
Olive Tree
0
Grasses
0
Weather
℃
℃
℉
7℃
67%
7 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
CAQI (Europe)
CAQI (Europe)
Allergy Risk
PM2.5
PM10
Alder
Ragweed
Mugwort
Birch
Olive Tree
Grasses
Places included
Site 14883
AQI 34
Site 39524
AQI 21
Walberberg
AQI 29
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
Bornheim
AQI 29
Alfter
AQI 22
Niederkassel
AQI 22
Wesseling
AQI 22
Bonn
AQI 38
Swisttal
AQI 22
Brühl
AQI 29
Weilerswist
AQI 29
Troisdorf
AQI 22
Sankt Augustin
AQI 22
Erftstadt
AQI 29
Air Matters © 2026