Winnebago County, IL: Current UV Index and Hourly Forecast

As of 11:42 PM CST on January 4, 2026, all 13 cities in Winnebago County, IL 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 Winnebago County, IL is expected to be 1.4 in Roscoe between 11:00 AM - 12:00 PM CST tomorrow.

Search Cities in Winnebago County, IL

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Winnebago County, IL as of 11:42 PM CST, January 4, 2026

Current UV Index in Cities in Winnebago County, IL

11:42 PM CST, January 4, 2026