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

St. Louis County

Missouri

2026-10-09 22:00
AQI (US)
Moderate
Pollutants|Pollens
O3
μg/m³
129.6
PM10
μg/m³
63
PM2.5
μg/m³
5.2
NO2
μg/m³
40.7
SO2
μg/m³
2.3
Weather
  • ℃
  • ℉
29℃
30%
17 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • SO2
Places included
Airport Township
AQI 77
Bonhomme Township
AQI 28
Chesterfield Township
AQI 30
Clayton Township
AQI 68
Concord Township
AQI 28
Creve Coeur Township
AQI 77
Ferguson Township
AQI 77
Gravois Township
AQI 42
Hadley Township
AQI 77
Jefferson Township
AQI 66
Lemay Township
AQI 28
Lewis and Clark Township
AQI 77
Maryland Heights Township
AQI 77
Meramec Township
AQI 69
Midland Township
AQI 77
Missouri River Township
AQI 42
Normandy Township
AQI 77
Northwest Township
AQI 77
Norwood Township
AQI 62
Oakville Township
AQI 32
Queeny Township
AQI 32
Spanish Lake Township
AQI 42
St. Ferdinand Township
AQI 42
Tesson Ferry Township
AQI 32
University Township
AQI 77
Wildhorse Township
AQI 32
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 26
Des Peres
AQI 26
Crystal Lake Park
AQI 26
Warson Woods
AQI 77
Rock Hill
AQI 77
Kirkwood
AQI 26
Frontenac
AQI 77
Glendale
AQI 26
Country Life Acres
AQI 26
Oakland
AQI 26
Westwood
AQI 77