Union County, IA: Current UV Index and Hourly Forecast

As of 3:41 PM CDT on September 16, 2025, out of 8 cities in Union County, IA in our database, 7 cities (88%) have a UV Index reading of Moderate, while 1 city (13%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Cromwell, IA with a reading of 4.6.

Over the next 24 hours, the highest UV Index reading in Union County, IA is expected to be 6.2 in Thayer between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in Union County, IA

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Union County, IA as of 3:41 PM CDT, September 16, 2025

Current UV Index in Cities in Union County, IA

3:41 PM CDT, September 16, 2025