Grundy County, IL: Current UV Index and Hourly Forecast

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As of 5:49 PM CDT on October 30, 2025, all 11 cities in Grundy County, IL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Morris, IL with a reading of 0.3.

Over the next 24 hours, the highest UV Index reading in Grundy County, IL is expected to be 2.9 in Morris between 1:00 PM - 2:00 PM CDT tomorrow.

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Current UV Index in Cities in Grundy County, IL

• Carbon Hill - 0.3
• Coal City - 0.3
• Diamond - 0.3
• East Brooklyn - 0.3
• Gardner - 0.3
• Kinsman - 0.3
• Mazon - 0.3
• Minooka - 0.3
• Morris - 0.3
• South Wilmington - 0.3
• Verona - 0.3