1. North America
  2. United States
  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-21 10:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
13.8
PM10
μg/m³
31.6
NO2
μg/m³
52
O3
μg/m³
8.6
SO2
μg/m³
3.4
Weather
  • ℃
  • ℉
9℃
90%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • NO2
  • O3
  • SO2
Places included
Airport Township
AQI 64
Bonhomme Township
AQI 59
Chesterfield Township
AQI 54
Clayton Township
AQI 64
Concord Township
AQI 58
Creve Coeur Township
AQI 64
Ferguson Township
AQI 67
Gravois Township
AQI 64
Hadley Township
AQI 64
Jefferson Township
AQI 64
Lemay Township
AQI 59
Lewis and Clark Township
AQI 64
Maryland Heights Township
AQI 64
Meramec Township
AQI 44
Midland Township
AQI 64
Missouri River Township
AQI 64
Normandy Township
AQI 65
Northwest Township
AQI 64
Norwood Township
AQI 62
Oakville Township
AQI 44
Queeny Township
AQI 44
Spanish Lake Township
AQI 58
St. Ferdinand Township
AQI 60
Tesson Ferry Township
AQI 44
University Township
AQI 64
Wildhorse Township
AQI 44
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

Cities Nearby

Huntleigh
AQI 64
Des Peres
AQI 64
Crystal Lake Park
AQI 64
Warson Woods
AQI 64
Rock Hill
AQI 64
Kirkwood
AQI 64
Frontenac
AQI 64
Glendale
AQI 64
Country Life Acres
AQI 64
Oakland
AQI 64
Westwood
AQI 64