Toggle navigation
Places
AQI (India)
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
Troisdorf
AQI (India)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Troisdorf
Rhein-Sieg-Kreis, Cologne
2026-04-18 23:00
AQI (India)
Good
Pollutants
|
Pollens
PM2.5
μg/m³
13.3
PM10
μg/m³
15.9
Birch
12.0
Grasses
3.0
Alder
0
Ragweed
0
Mugwort
0
Olive Tree
0
Weather
℃
℃
℉
12℃
94%
6 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (India)
AQI (India)
Allergy Risk
PM2.5
PM10
Birch
Grasses
Alder
Ragweed
Mugwort
Olive Tree
Places included
Bergheim
AQI 23
Eschmar
AQI 23
Sieglar
AQI 23
Site 4106
AQI 34
Spich
AQI 23
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
Troisdorf
AQI 23
Siegburg
AQI 23
Lohmar
AQI 25
Sankt Augustin
AQI 23
Niederkassel
AQI 20
Bonn
AQI 37
Rösrath
AQI 22
Wesseling
AQI 18
Alfter
AQI 23
Bornheim
AQI 21
Neunkirchen-Seelscheid
AQI 23
Air Matters © 2026