DuPage County, IL: Current UV Index and Hourly Forecast

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As of 9:04 AM CDT on October 9, 2025, all 31 cities in DuPage County, IL in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Naperville, IL with a reading of 0.8.

Over the next 24 hours, the highest UV Index reading in DuPage County, IL is expected to be 4.5 in Naperville between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in DuPage County, IL

• Addison - 0.8
• Bartlett - 0.8
• Bensenville - 0.8
• Bloomingdale - 0.8
• Burr Ridge - 0.8
• Carol Stream - 0.8
• Clarendon Hills - 0.8
• Darien - 0.8
• Downers Grove - 0.8
• Elmhurst - 0.8
• Glen Ellyn - 0.8
• Glendale Heights - 0.8
• Hanover Park - 0.8
• Hinsdale - 0.8
• Itasca - 0.8
• Lisle - 0.8
• Lombard - 0.8
• Naperville - 0.8
• Oak Brook - 0.8
• Oakbrook Terrace - 0.8
• Roselle - 0.8
• Villa Park - 0.8
• Warrenville - 0.8
• Wayne - 0.8
• West Chicago - 0.8
• Westmont - 0.8
• Wheaton - 0.8
• Willowbrook - 0.8
• Winfield - 0.8
• Wood Dale - 0.8
• Woodridge - 0.8