Warren County, NJ: Current UV Index and Hourly Forecast

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As of 3:02 PM EDT on June 4, 2025, all 33 cities in Warren County, NJ in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Hackettstown, NJ with a reading of 6.8.

Over the next 24 hours, the highest UV Index reading in Warren County, NJ is expected to be 8.2 in Finesville between 1:00 PM - 2:00 PM EDT tomorrow.

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Current UV Index in Cities in Warren County, NJ

• Alpha - 6.6
• Anderson - 6.7
• Asbury - 6.7
• Beattystown - 6.8
• Belvidere - 6.7
• Brainards - 6.6
• Brass Castle - 6.7
• Bridgeville - 6.7
• Broadway - 6.7
• Brookfield - 6.7
• Buttzville - 6.7
• Columbia - 6.7
• Delaware Park - 6.6
• Finesville - 6.8
• Great Meadows - 6.7
• Hackettstown - 6.8
• Hainesburg - 6.7
• Hutchinson - 6.7
• Johnsonburg - 6.7
• Lopatcong Overlook - 6.6
• Marksboro - 6.7
• Mount Hermon - 6.7
• Mountain Lake - 6.7
• New Village - 6.7
• Panther Valley - 6.7
• Phillipsburg - 6.6
• Port Colden - 6.7
• Port Murray - 6.7
• Stewartsville - 6.7
• Upper Pohatcong - 6.6
• Upper Stewartsville - 6.7
• Vienna - 6.7
• Washington - 6.7