McHenry County, IL: Current UV Index and Hourly Forecast

As of 9:59 PM CDT on June 28, 2025, all 40 cities in McHenry 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 McHenry County, IL is expected to be 9.3 in Huntley between 1:00 PM - 2:00 PM CDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in McHenry County, IL as of 9:59 PM CDT, June 28, 2025

Current UV Index in Cities in McHenry County, IL

9:59 PM CDT, June 28, 2025