Grundy County, IL: Current UV Index and Hourly Forecast

As of 5:31 PM CDT on June 23, 2025, all 11 cities in Grundy County, IL in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Morris, IL with a reading of 3.1.

Over the next 24 hours, the highest UV Index reading in Grundy County, IL is expected to be 10.3 in Morris 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 Grundy County, IL as of 5:31 PM CDT, June 23, 2025

Current UV Index in Cities in Grundy County, IL

5:31 PM CDT, June 23, 2025