Jefferson County, NY: Current UV Index and Hourly Forecast

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As of 10:21 AM EST on February 25, 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 Chaumont, NY with a reading of 1.2.

Over the next 24 hours, the highest UV Index reading in Jefferson County, NY is expected to be 1.3 in Chaumont between 11:00 AM - 12:00 PM EST today.

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Current UV Index in Cities in Jefferson County, NY

• Adams Center - 0.5
• Alexandria Bay - 0.7
• Belleville - 0.5
• Black River - 0.6
• Calcium - 0.6
• Carthage - 0.6
• Chaumont - 1.2
• Deferiet - 0.6
• Depauville - 0.7
• Dexter - 0.8
• Evans Mills - 0.6
• Felts Mills - 0.6
• Fishers Landing - 0.7
• Fort Drum - 0.6
• Glen Park - 0.8
• Great Bend - 0.6
• Herrings - 0.6
• La Fargeville - 0.7
• Mannsville - 0.5
• Natural Bridge - 0.6
• Oxbow - 0.6
• Pamelia Center - 0.8
• Pierrepont Manor - 0.5
• Plessis - 0.6
• Redwood - 0.6
• Sackets Harbor - 0.8
• Thousand Island Park - 0.7
• Three Mile Bay - 1.2
• Watertown - 0.8
• West Carthage - 0.6