Jefferson County, NY: Current UV Index and Hourly Forecast

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As of 9:13 AM EDT on April 24, 2025, 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 Carthage, NY with a reading of 1.7.

Over the next 24 hours, the highest UV Index reading in Jefferson County, NY is expected to be 6.3 in Adams Center between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Jefferson County, NY

• Adams Center - 1.7
• Alexandria Bay - 1.5
• Belleville - 1.7
• Black River - 1.6
• Calcium - 1.6
• Carthage - 1.7
• Chaumont - 1.6
• Deferiet - 1.6
• Depauville - 1.5
• Dexter - 1.6
• Evans Mills - 1.6
• Felts Mills - 1.6
• Fishers Landing - 1.5
• Fort Drum - 1.6
• Glen Park - 1.6
• Great Bend - 1.6
• Herrings - 1.6
• La Fargeville - 1.5
• Mannsville - 1.7
• Natural Bridge - 1.7
• Oxbow - 1.6
• Pamelia Center - 1.6
• Pierrepont Manor - 1.7
• Plessis - 1.6
• Redwood - 1.6
• Sackets Harbor - 1.6
• Thousand Island Park - 1.5
• Three Mile Bay - 1.6
• Watertown - 1.6
• West Carthage - 1.7