Toggle navigation
Places
AQI (China)
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
Düsseldorf
Viersen
Willich
AQI (China)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Willich
Viersen, Düsseldorf
2026-09-23 13:00
AQI (China)
Excellent
Pollutants
|
Pollens
PM10
μg/m³
21
PM2.5
μg/m³
11
Ragweed
3.0
Grasses
3.0
Alder
0
Mugwort
0
Birch
0
Olive Tree
0
Weather
℃
℃
℉
21℃
53%
13 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (China)
AQI (China)
Allergy Risk
PM10
PM2.5
Ragweed
Grasses
Alder
Mugwort
Birch
Olive Tree
Places included
Anrath
AQI 20
Hardt
AQI 24
Neersen
AQI 20
Schiefbahn
AQI 20
Site 28762
AQI 7
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
Willich
AQI 21
Kaarst
AQI 24
Krefeld
AQI 24
Korschenbroich
AQI 20
Tönisvorst
AQI 22
Meerbusch
AQI 24
Viersen
AQI 20
Mönchengladbach
AQI 20
Neuss
AQI 24
Kempen
AQI 24
Grefrath
AQI 19
Air Matters © 2026