DuPage County, IL: Current UV Index and Hourly Forecast

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As of 12:44 PM CST on November 8, 2026, 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 2.4.

Over the next 24 hours, the highest UV Index reading in DuPage County, IL is expected to be 2.4 in Naperville between 12:00 PM - 1:00 PM CST today.

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Current UV Index in Cities in DuPage County, IL

• Addison - 2.4
• Bartlett - 2.4
• Bensenville - 2.4
• Bloomingdale - 2.4
• Burr Ridge - 2.4
• Carol Stream - 2.4
• Clarendon Hills - 2.4
• Darien - 2.4
• Downers Grove - 2.4
• Elmhurst - 2.4
• Glen Ellyn - 2.4
• Glendale Heights - 2.4
• Hanover Park - 2.4
• Hinsdale - 2.4
• Itasca - 2.4
• Lisle - 2.4
• Lombard - 2.4
• Naperville - 2.4
• Oak Brook - 2.4
• Oakbrook Terrace - 2.4
• Roselle - 2.4
• Villa Park - 2.4
• Warrenville - 2.4
• Wayne - 2.4
• West Chicago - 2.4
• Westmont - 2.4
• Wheaton - 2.4
• Willowbrook - 2.4
• Winfield - 2.4
• Wood Dale - 2.4
• Woodridge - 2.4