LaSalle County, IL: Current UV Index and Hourly Forecast

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As of 5:15 PM CDT on October 5, 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 0.8.

Over the next 24 hours, the highest UV Index reading in LaSalle County, IL is expected to be 4.6 in Streator between 1:00 PM - 2:00 PM CDT tomorrow.

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Current UV Index in Cities in LaSalle County, IL

• Cedar Point - 0.8
• Dana - 0.8
• Dayton - 0.8
• Earlville - 0.8
• Grand Ridge - 0.8
• Harding - 0.8
• Kangley - 0.8
• LaSalle - 0.8
• Lake Holiday - 0.8
• Leland - 0.8
• Leonore - 0.8
• Lostant - 0.8
• Marseilles - 0.8
• Mendota - 0.8
• Millington - 0.7
• Naplate - 0.8
• North Utica - 0.8
• Oglesby - 0.8
• Ottawa - 0.8
• Peru - 0.8
• Ransom - 0.8
• Rutland - 0.8
• Seneca - 0.8
• Serena - 0.8
• Sheridan - 0.8
• Streator - 0.8
• Tonica - 0.8
• Triumph - 0.8
• Troy Grove - 0.8
• Wedron - 0.8