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
North America
United States
Illinois
St. Clair County
O'Fallon Township
AQI (India)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
O'Fallon Township
St. Clair County
2026-02-17 18:00
AQI (India)
Good
Pollutants
PM10
μg/m³
19
PM2.5
μg/m³
9.3
Weather
℃
℃
℉
12℃
84%
26 kph
1 of 11
Historical Data
Hourly
Hourly
Daily
AQI (India)
AQI (India)
PM10
PM2.5
Places included
O'Fallon
AQI 19
Data Sources
http://www.airnow.gov/
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
O'Fallon
AQI 19
Lebanon
AQI 20
Collinsville
AQI 21
Fairview Heights
AQI 19
Saint Jacob
AQI 20
Maryville
AQI 21
Caseyville
AQI 19
Swansea
AQI 53
Belleville
AQI 53
Glen Carbon
AQI 21
Trenton
AQI 20
Air Matters © 2026