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

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As of 9:43 AM CST on January 28, 2026, 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 Chesterfield, MO with a reading of 0.9.

Over the next 24 hours, the highest UV Index reading in St. Louis County, MO is expected to be 2.9 in Oakville between 12:00 PM - 1:00 PM CST today.

Search Cities in St. Louis County, MO

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

• Affton - 0.9
• Ballwin - 0.8
• Bel-Nor - 0.8
• Bel-Ridge - 0.8
• Bella Villa - 0.9
• Bellefontaine Neighbors - 0.8
• Bellerive Acres - 0.8
• Berkeley - 0.8
• Beverly Hills - 0.8
• Black Jack - 0.8
• Breckenridge Hills - 0.8
• Brentwood - 0.9
• Bridgeton - 0.9
• Calverton Park - 0.8
• Castle Point - 0.8
• Champ - 0.9
• Charlack - 0.8
• Chesterfield - 0.9
• Clarkson Valley - 0.9
• Clayton - 0.8
• Concord - 0.9
• Cool Valley - 0.8
• Country Club Hills - 0.8
• Country Life Acres - 0.8
• Crestwood - 0.8
• Creve Coeur - 0.9
• Crystal Lake Park - 0.8
• Dellwood - 0.8
• Des Peres - 0.8
• Edmundson - 0.8
• Ellisville - 0.8
• Eureka - 0.8
• Fenton - 0.8
• Ferguson - 0.8
• Flordell Hills - 0.8
• Florissant - 0.8
• Frontenac - 0.9
• Glasgow Village - 0.8
• Glen Echo Park - 0.8
• Glendale - 0.8
• Grantwood Village - 0.9
• Green Park - 0.9
• Greendale - 0.8
• Hanley Hills - 0.8
• Hazelwood - 0.9
• Hillsdale - 0.8
• Huntleigh - 0.8
• Jennings - 0.8
• Kinloch - 0.8
• Kirkwood - 0.8
• Ladue - 0.9
• Lakeshire - 0.9
• Lemay - 0.9
• Manchester - 0.8
• Maplewood - 0.9
• Marlborough - 0.9
• Maryland Heights - 0.9
• Mehlville - 0.9
• Moline Acres - 0.8
• Normandy - 0.8
• Northwoods - 0.8
• Norwood Court - 0.8
• Oakland - 0.8
• Oakville - 0.9
• Old Jamestown - 0.8
• Olivette - 0.9
• Overland - 0.8
• Pagedale - 0.8
• Pasadena Hills - 0.8
• Pasadena Park - 0.8
• Pine Lawn - 0.8
• Richmond Heights - 0.8
• Riverview - 0.8
• Rock Hill - 0.9
• Sappington - 0.9
• Shrewsbury - 0.9
• Spanish Lake - 0.8
• St. Ann - 0.9
• St. George - 0.9
• St. John - 0.8
• Sunset Hills - 0.8
• Sycamore Hills - 0.8
• Town and Country - 0.9
• Twin Oaks - 0.8
• University City - 0.8
• Uplands Park - 0.8
• Valley Park - 0.8
• Velda City - 0.8
• Velda Village Hills - 0.8
• Vinita Park - 0.8
• Warson Woods - 0.8
• Webster Groves - 0.9
• Wellston - 0.8
• Westwood - 0.9
• Wilbur Park - 0.9
• Wildwood - 0.8
• Winchester - 0.8
• Woodson Terrace - 0.8