Sioux County, IA: Current UV Index and Hourly Forecast

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As of 3:09 PM CDT on July 15, 2025, all 13 cities in Sioux County, IA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Orange City, IA with a reading of 8.1.

Over the next 24 hours, the highest UV Index reading in Sioux County, IA is expected to be 8.1 in Orange City between 3:00 PM - 4:00 PM CDT today.

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Current UV Index in Cities in Sioux County, IA

• Alton - 8.1
• Boyden - 8
• Chatsworth - 8
• Granville - 8.1
• Hawarden - 8
• Hospers - 8.1
• Hull - 8
• Ireton - 8
• Matlock - 8
• Maurice - 8
• Orange City - 8.1
• Rock Valley - 8
• Sioux Center - 8