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

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As of 3:48 PM CST on November 4, 2025, all 98 cities in St. Louis County, MO in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Florissant, MO with a reading of 1.3.

Over the next 24 hours, the highest UV Index reading in St. Louis County, MO is expected to be 3.7 in Wildwood between 12:00 PM - 1:00 PM CST tomorrow.

Search Cities in St. Louis County, MO

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

• Affton - 1.3
• Ballwin - 1.3
• Bel-Nor - 1.3
• Bel-Ridge - 1.3
• Bella Villa - 1.3
• Bellefontaine Neighbors - 1.3
• Bellerive Acres - 1.3
• Berkeley - 1.3
• Beverly Hills - 1.3
• Black Jack - 1.3
• Breckenridge Hills - 1.3
• Brentwood - 1.3
• Bridgeton - 1.3
• Calverton Park - 1.3
• Castle Point - 1.3
• Champ - 1.3
• Charlack - 1.3
• Chesterfield - 1.3
• Clarkson Valley - 1.3
• Clayton - 1.3
• Concord - 1.3
• Cool Valley - 1.3
• Country Club Hills - 1.3
• Country Life Acres - 1.3
• Crestwood - 1.3
• Creve Coeur - 1.3
• Crystal Lake Park - 1.3
• Dellwood - 1.3
• Des Peres - 1.3
• Edmundson - 1.3
• Ellisville - 1.3
• Eureka - 1.3
• Fenton - 1.3
• Ferguson - 1.3
• Flordell Hills - 1.3
• Florissant - 1.3
• Frontenac - 1.3
• Glasgow Village - 1.3
• Glen Echo Park - 1.3
• Glendale - 1.3
• Grantwood Village - 1.3
• Green Park - 1.3
• Greendale - 1.3
• Hanley Hills - 1.3
• Hazelwood - 1.3
• Hillsdale - 1.3
• Huntleigh - 1.3
• Jennings - 1.3
• Kinloch - 1.3
• Kirkwood - 1.3
• Ladue - 1.3
• Lakeshire - 1.3
• Lemay - 1.3
• Manchester - 1.3
• Maplewood - 1.3
• Marlborough - 1.3
• Maryland Heights - 1.3
• Mehlville - 1.3
• Moline Acres - 1.3
• Normandy - 1.3
• Northwoods - 1.3
• Norwood Court - 1.3
• Oakland - 1.3
• Oakville - 1.3
• Old Jamestown - 1.3
• Olivette - 1.3
• Overland - 1.3
• Pagedale - 1.3
• Pasadena Hills - 1.3
• Pasadena Park - 1.3
• Pine Lawn - 1.3
• Richmond Heights - 1.3
• Riverview - 1.3
• Rock Hill - 1.3
• Sappington - 1.3
• Shrewsbury - 1.3
• Spanish Lake - 1.3
• St. Ann - 1.3
• St. George - 1.3
• St. John - 1.3
• Sunset Hills - 1.3
• Sycamore Hills - 1.3
• Town and Country - 1.3
• Twin Oaks - 1.3
• University City - 1.3
• Uplands Park - 1.3
• Valley Park - 1.3
• Velda City - 1.3
• Velda Village Hills - 1.3
• Vinita Park - 1.3
• Warson Woods - 1.3
• Webster Groves - 1.3
• Wellston - 1.3
• Westwood - 1.3
• Wilbur Park - 1.3
• Wildwood - 1.3
• Winchester - 1.3
• Woodson Terrace - 1.3