DuPage County, IL: Current UV Index and Hourly Forecast

As of 12:58 PM CDT on September 18, 2025, all 31 cities in DuPage County, IL in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Naperville, IL with a reading of 5.7.

Over the next 24 hours, the highest UV Index reading in DuPage County, IL is expected to be 6.1 in Naperville 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 DuPage County, IL as of 12:58 PM CDT, September 18, 2025

Current UV Index in Cities in DuPage County, IL

12:58 PM CDT, September 18, 2025