Johnson County, IL: Current UV Index and Hourly Forecast

As of 8:14 PM CDT on August 25, 2025, all 7 cities in Johnson 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 Johnson County, IL is expected to be 8 in Cypress between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in Johnson County, IL

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Johnson County, IL as of 8:14 PM CDT, August 25, 2025

Current UV Index in Cities in Johnson County, IL

8:14 PM CDT, August 25, 2025