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

As of 11:44 PM CDT on July 18, 2025, all 7 cities in St. Clair County, MO in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in St. Clair County, MO is expected to be 10.4 in Collins between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in St. Clair County, MO

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in St. Clair County, MO as of 11:44 PM CDT, July 18, 2025

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

11:44 PM CDT, July 18, 2025