AQ Index for St. Louis County, Missouri

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Air Quality Index for St. Louis County, Missouri

The area with the highest AQ Index (as of 17:00 CST) in is in the Saint Louis area. Particle Pollution (PM2.5) is measuring at 32 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.

Over the next few days, the highest primary air pollutant will be Ozone (OZONE) in the Saint Louis area. It is forecasted to be 0 (Good), meaning air quality is satisfactory, and air pollution poses little or no risk.

Below is a clickable map of St. Louis County, Missouri. The markers on the map identify large, populated cities. If you hover over a marker, it will display the city name and the current AQ index. The color of the city markers also references the current AQ risk level.

Range0 - 5051 - 100101 - 150151 - 200201 - 300301 - 500
Color
CategoryGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardous

Last Updated 14 minutes ago

AQ Index Forecast by City in St. Louis County

Below is a list of cities in St. Louis County where we track and forecast the AQ index. Click on a city name to get the current AQ index as well as any available forcasts.

St. Louis Florissant Chesterfield Oakville Wildwood
University City Ballwin Mehlville Kirkwood Maryland Heights
Hazelwood Webster Groves Ferguson Old Jamestown Affton
Creve Coeur Concord Manchester Spanish Lake Clayton
Lemay Overland Jennings St. Ann Crestwood
Bridgeton Town And Country Bellefontaine Neighbors Eureka Ellisville
Berkeley Des Peres Ladue Richmond Heights Sunset Hills
Maplewood Brentwood Olivette Sappington Black Jack
Valley Park St. John Shrewsbury Glendale Glasgow Village
Dellwood Normandy Rock Hill Breckenridge Hills Northwoods
Woodson Terrace Fenton Pine Lawn Frontenac Pagedale
Riverview Moline Acres Marlborough Bel Ridge Green Park
Clarkson Valley Castle Point Warson Woods St. George Charlack
Wellston Hanley Hills Winchester Oakland Bel Nor
Lakeshire Calverton Park Vinita Park Velda City Country Club Hills
Edmundson Flordell Hills Pasadena Hills Cool Valley Norwood Court
Hillsdale Grantwood Village Velda Village Hills Greendale Bella Villa
Sycamore Hills Pasadena Park Beverly Hills Twin Oaks Huntleigh
Crystal Lake Park Wilbur Park Uplands Park Bellerive Acres Kinloch
Westwood Glen Echo Park Country Life Acres Champ