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

St. Louis County

Missouri

2026-10-18 00:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
18.1
O3
μg/m³
45
PM2.5
μg/m³
3.3
NO2
μg/m³
4.1
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
9℃
67%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • SO2
Places included
Airport Township
AQI 27
Bonhomme Township
AQI 7
Chesterfield Township
AQI 7
Clayton Township
AQI 23
Concord Township
AQI 7
Creve Coeur Township
AQI 27
Ferguson Township
AQI 27
Gravois Township
AQI 14
Hadley Township
AQI 27
Jefferson Township
AQI 22
Lemay Township
AQI 7
Lewis and Clark Township
AQI 27
Maryland Heights Township
AQI 27
Meramec Township
AQI 17
Midland Township
AQI 27
Missouri River Township
AQI 14
Normandy Township
AQI 27
Northwest Township
AQI 27
Norwood Township
AQI 24
Oakville Township
AQI 7
Queeny Township
AQI 7
Spanish Lake Township
AQI 21
St. Ferdinand Township
AQI 22
Tesson Ferry Township
AQI 7
University Township
AQI 27
Wildhorse Township
AQI 7
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 7
Des Peres
AQI 7
Crystal Lake Park
AQI 7
Warson Woods
AQI 27
Rock Hill
AQI 27
Kirkwood
AQI 7
Frontenac
AQI 27
Glendale
AQI 7
Country Life Acres
AQI 7
Oakland
AQI 7
Westwood
AQI 27