St. Louis County, MO: Current UV Index and Hourly Forecast

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As of 3:44 PM CDT on March 12, 2026, all 98 cities in St. Louis County, MO in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Wildwood, MO with a reading of 2.8.

Over the next 24 hours, the highest UV Index reading in St. Louis County, MO is expected to be 4.3 in Wildwood between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in St. Louis County, MO

Current UV Index in Cities in St. Louis County, MO

• Affton - 2.6
• Ballwin - 2.7
• Bel-Nor - 2.5
• Bel-Ridge - 2.5
• Bella Villa - 2.6
• Bellefontaine Neighbors - 2.5
• Bellerive Acres - 2.5
• Berkeley - 2.5
• Beverly Hills - 2.5
• Black Jack - 2.5
• Breckenridge Hills - 2.5
• Brentwood - 2.6
• Bridgeton - 2.6
• Calverton Park - 2.5
• Castle Point - 2.5
• Champ - 2.6
• Charlack - 2.5
• Chesterfield - 2.6
• Clarkson Valley - 2.6
• Clayton - 2.5
• Concord - 2.6
• Cool Valley - 2.5
• Country Club Hills - 2.5
• Country Life Acres - 2.7
• Crestwood - 2.7
• Creve Coeur - 2.6
• Crystal Lake Park - 2.7
• Dellwood - 2.5
• Des Peres - 2.7
• Edmundson - 2.5
• Ellisville - 2.7
• Eureka - 2.8
• Fenton - 2.7
• Ferguson - 2.5
• Flordell Hills - 2.5
• Florissant - 2.5
• Frontenac - 2.6
• Glasgow Village - 2.5
• Glen Echo Park - 2.5
• Glendale - 2.7
• Grantwood Village - 2.6
• Green Park - 2.6
• Greendale - 2.5
• Hanley Hills - 2.5
• Hazelwood - 2.6
• Hillsdale - 2.5
• Huntleigh - 2.7
• Jennings - 2.5
• Kinloch - 2.5
• Kirkwood - 2.7
• Ladue - 2.6
• Lakeshire - 2.6
• Lemay - 2.6
• Manchester - 2.7
• Maplewood - 2.6
• Marlborough - 2.6
• Maryland Heights - 2.6
• Mehlville - 2.6
• Moline Acres - 2.5
• Normandy - 2.5
• Northwoods - 2.5
• Norwood Court - 2.5
• Oakland - 2.7
• Oakville - 2.6
• Old Jamestown - 2.5
• Olivette - 2.6
• Overland - 2.5
• Pagedale - 2.5
• Pasadena Hills - 2.5
• Pasadena Park - 2.5
• Pine Lawn - 2.5
• Richmond Heights - 2.5
• Riverview - 2.5
• Rock Hill - 2.6
• Sappington - 2.6
• Shrewsbury - 2.6
• Spanish Lake - 2.5
• St. Ann - 2.6
• St. George - 2.6
• St. John - 2.5
• Sunset Hills - 2.7
• Sycamore Hills - 2.5
• Town and Country - 2.6
• Twin Oaks - 2.7
• University City - 2.5
• Uplands Park - 2.5
• Valley Park - 2.7
• Velda City - 2.5
• Velda Village Hills - 2.5
• Vinita Park - 2.5
• Warson Woods - 2.7
• Webster Groves - 2.6
• Wellston - 2.5
• Westwood - 2.6
• Wilbur Park - 2.6
• Wildwood - 2.8
• Winchester - 2.7
• Woodson Terrace - 2.5