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
North America
United States
Missouri
St. Charles County
Harvester Township
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Harvester Township
St. Charles County
2026-06-14 10:00
CAQI (Europe)
Very Low
Pollutants
PM2.5
μg/m³
1.7
Weather
℃
℃
℉
22℃
81%
24 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
CAQI (Europe)
CAQI (Europe)
PM2.5
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
Chesterfield
AQI 10
Cottleville
AQI 3
St. Peters
AQI 3
Saint Charles
AQI 10
Weldon Spring Heights
AQI 3
Weldon Spring
AQI 26
Champ
AQI 10
Clarkson Valley
AQI 10
Maryland Heights
AQI 36
O'Fallon
AQI 24
Ballwin
AQI 10
Air Matters © 2026