Clayton County, IA: Current UV Index and Hourly Forecast

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As of 8:34 AM CDT on April 22, 2026, all 16 cities in Clayton County, IA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Guttenberg, IA with a reading of 0.7.

Over the next 24 hours, the highest UV Index reading in Clayton County, IA is expected to be 7 in Guttenberg between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in Clayton County, IA

• Clayton - 0.7
• Elkader - 0.7
• Elkport - 0.7
• Farmersburg - 0.7
• Garber - 0.7
• Garnavillo - 0.7
• Guttenberg - 0.7
• Luana - 0.7
• Marquette - 0.7
• McGregor - 0.7
• Monona - 0.7
• North Buena Vista - 0.7
• Osterdock - 0.7
• St. Olaf - 0.7
• Strawberry Point - 0.7
• Volga - 0.7