Clayton County, IA: Current UV Index and Hourly Forecast

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As of 3:21 AM CDT on August 20, 2025, all 16 cities in Clayton County, IA in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Clayton County, IA is expected to be 8.1 in Garnavillo between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in Clayton County, IA

• Clayton - 0
• Elkader - 0
• Elkport - 0
• Farmersburg - 0
• Garber - 0
• Garnavillo - 0
• Guttenberg - 0
• Luana - 0
• Marquette - 0
• McGregor - 0
• Monona - 0
• North Buena Vista - 0
• Osterdock - 0
• St. Olaf - 0
• Strawberry Point - 0
• Volga - 0