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

• USA →
• Missouri →
• St. Louis County

As of 9:14 AM CDT on May 12, 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 Chesterfield, MO with a reading of 1.7.

Over the next 24 hours, the highest UV Index reading in St. Louis County, MO is expected to be 6.6 in Chesterfield between 2:00 PM - 3:00 PM CDT today.

Search Cities in St. Louis County, MO

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

• Affton - 0.3
• Ballwin - 0.4
• Bel-Nor - 1.5
• Bel-Ridge - 1.5
• Bella Villa - 0.3
• Bellefontaine Neighbors - 1.5
• Bellerive Acres - 1.5
• Berkeley - 1.5
• Beverly Hills - 1.5
• Black Jack - 1.5
• Breckenridge Hills - 1.5
• Brentwood - 0.3
• Bridgeton - 1.7
• Calverton Park - 1.5
• Castle Point - 1.5
• Champ - 1.7
• Charlack - 1.5
• Chesterfield - 1.7
• Clarkson Valley - 1.7
• Clayton - 1.5
• Concord - 0.3
• Cool Valley - 1.5
• Country Club Hills - 1.5
• Country Life Acres - 0.4
• Crestwood - 0.4
• Creve Coeur - 1.7
• Crystal Lake Park - 0.4
• Dellwood - 1.5
• Des Peres - 0.4
• Edmundson - 1.5
• Ellisville - 0.4
• Eureka - 0.6
• Fenton - 0.4
• Ferguson - 1.5
• Flordell Hills - 1.5
• Florissant - 1.5
• Frontenac - 1.7
• Glasgow Village - 1.5
• Glen Echo Park - 1.5
• Glendale - 0.4
• Grantwood Village - 0.3
• Green Park - 0.3
• Greendale - 1.5
• Hanley Hills - 1.5
• Hazelwood - 1.7
• Hillsdale - 1.5
• Huntleigh - 0.4
• Jennings - 1.5
• Kinloch - 1.5
• Kirkwood - 0.4
• Ladue - 1.7
• Lakeshire - 0.3
• Lemay - 0.3
• Manchester - 0.4
• Maplewood - 0.3
• Marlborough - 0.3
• Maryland Heights - 1.7
• Mehlville - 0.3
• Moline Acres - 1.5
• Normandy - 1.5
• Northwoods - 1.5
• Norwood Court - 1.5
• Oakland - 0.4
• Oakville - 0.3
• Old Jamestown - 1.5
• Olivette - 1.7
• Overland - 1.5
• Pagedale - 1.5
• Pasadena Hills - 1.5
• Pasadena Park - 1.5
• Pine Lawn - 1.5
• Richmond Heights - 1.5
• Riverview - 1.5
• Rock Hill - 0.3
• Sappington - 0.3
• Shrewsbury - 0.3
• Spanish Lake - 1.5
• St. Ann - 1.7
• St. George - 0.3
• St. John - 1.5
• Sunset Hills - 0.4
• Sycamore Hills - 1.5
• Town and Country - 1.7
• Twin Oaks - 0.4
• University City - 1.5
• Uplands Park - 1.5
• Valley Park - 0.4
• Velda City - 1.5
• Velda Village Hills - 1.5
• Vinita Park - 1.5
• Warson Woods - 0.4
• Webster Groves - 0.3
• Wellston - 1.5
• Westwood - 1.7
• Wilbur Park - 0.3
• Wildwood - 0.6
• Winchester - 0.4
• Woodson Terrace - 1.5