Toggle navigation
Places
AQI (US)
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
Rivers Township
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Rivers Township
St. Charles County
2026-09-27 13:00
AQI (US)
Good
Pollutants
|
Pollens
PM2.5
μg/m³
5.4
PM10
μg/m³
16
O3
μg/m³
19.3
NO2
μg/m³
11.9
Pollen
6.3
Weather
℃
℃
℉
16℃
87%
7 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
Pollen
PM2.5
PM10
O3
NO2
Places included
Portage Des Sioux
AQI 30
West Alton
AQI 30
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
Portage Des Sioux
AQI 30
Grafton
AQI 25
Elsah
AQI 25
Saint Charles
AQI 40
Bridgeton
AQI 40
Hazelwood
AQI 40
Old Jamestown
AQI 30
Florissant
AQI 40
Champ
AQI 40
Brussels
AQI 25
Calverton Park
AQI 40
Air Matters © 2026