1. North America
  2. United States
  3. Missouri
  4. St. Charles County
  6. O'Fallon

O'Fallon

Boone Township, St. Charles County

2026-10-09 00:00
AQI (India)
Moderately polluted
Pollutants|Pollens
O3
μg/m³
124.2
NO2
μg/m³
30.8
PM10
μg/m³
26.9
PM2.5
μg/m³
5.5
SO2
μg/m³
2.1
Weather
  • ℃
  • ℉
20℃
54%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • NO2
  • PM10
  • PM2.5
  • SO2

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

O'Fallon
AQI 136
St. Peters
AQI 134
Saint Paul
AQI 93
Cottleville
AQI 136
Lake Saint Louis
AQI 140
Josephville
AQI 93
Weldon Spring
AQI 131
Weldon Spring Heights
AQI 131
Wentzville
AQI 147
Chain of Rocks
AQI 144
Flint Hill
AQI 147