LaSalle County, IL: Current UV Index and Hourly Forecast

As of 8:25 AM CDT on June 23, 2025, all 30 cities in LaSalle County, IL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Ottawa, IL with a reading of 1.7.

Over the next 24 hours, the highest UV Index reading in LaSalle County, IL is expected to be 10.5 in Peru between 1:00 PM - 2:00 PM CDT today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in LaSalle County, IL as of 8:25 AM CDT, June 23, 2025

Current UV Index in Cities in LaSalle County, IL

8:25 AM CDT, June 23, 2025