Jefferson County, MO: Current UV Index and Hourly Forecast

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As of 1:55 AM CDT on June 23, 2025, all 25 cities in Jefferson County, MO 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 Jefferson County, MO is expected to be 10.7 in Imperial between 1:00 PM - 2:00 PM CDT today.

Search Cities in Jefferson County, MO

Current UV Index in Cities in Jefferson County, MO

• Arnold - 0
• Barnhart - 0
• Briarwood Estates - 0
• Byrnes Mill - 0
• Cedar Hill - 0
• Cedar Hill Lakes - 0
• Crystal City - 0
• De Soto - 0
• Festus - 0
• Herculaneum - 0
• High Ridge - 0
• Hillsboro - 0
• Horine - 0
• Imperial - 0
• Kimmswick - 0
• LaBarque Creek - 0
• Lake Tekakwitha - 0
• Murphy - 0
• Olympian Village - 0
• Parkdale - 0
• Peaceful Village - 0
• Pevely - 0
• Raintree Plantation - 0
• Scotsdale - 0
• Summer Set - 0