Jefferson County, NY: Current UV Index and Hourly Forecast

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As of 12:19 PM EDT on April 10, 2026, all 30 cities in Jefferson County, NY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Adams Center, NY with a reading of 1.6.

Over the next 24 hours, the highest UV Index reading in Jefferson County, NY is expected to be 4 in Adams Center between 11:00 AM - 12:00 PM EDT tomorrow.

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Current UV Index in Cities in Jefferson County, NY

• Adams Center - 1.6
• Alexandria Bay - 0.6
• Belleville - 1.6
• Black River - 0.8
• Calcium - 0.8
• Carthage - 1.2
• Chaumont - 0.9
• Deferiet - 0.8
• Depauville - 0.6
• Dexter - 0.8
• Evans Mills - 0.8
• Felts Mills - 0.8
• Fishers Landing - 0.6
• Fort Drum - 0.8
• Glen Park - 0.8
• Great Bend - 0.8
• Herrings - 0.8
• La Fargeville - 0.6
• Mannsville - 1.6
• Natural Bridge - 1.2
• Oxbow - 0.6
• Pamelia Center - 0.8
• Pierrepont Manor - 1.6
• Plessis - 0.6
• Redwood - 0.6
• Sackets Harbor - 0.8
• Thousand Island Park - 0.6
• Three Mile Bay - 0.9
• Watertown - 0.8
• West Carthage - 1.2