Warren County, NJ: Current UV Index and Hourly Forecast

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As of 8:26 AM EDT on May 30, 2026, all 33 cities in Warren County, NJ in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Phillipsburg, NJ with a reading of 1.1.

Over the next 24 hours, the highest UV Index reading in Warren County, NJ is expected to be 7.1 in Phillipsburg between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Warren County, NJ

• Alpha - 1.1
• Anderson - 1
• Asbury - 1
• Beattystown - 1
• Belvidere - 1
• Brainards - 1.1
• Brass Castle - 1
• Bridgeville - 1
• Broadway - 1
• Brookfield - 1
• Buttzville - 1
• Columbia - 0.8
• Delaware Park - 1.1
• Finesville - 1.1
• Great Meadows - 0.8
• Hackettstown - 1
• Hainesburg - 0.8
• Hutchinson - 1
• Johnsonburg - 0.8
• Lopatcong Overlook - 1.1
• Marksboro - 0.8
• Mount Hermon - 0.8
• Mountain Lake - 1
• New Village - 1
• Panther Valley - 0.5
• Phillipsburg - 1.1
• Port Colden - 1
• Port Murray - 1
• Stewartsville - 1
• Upper Pohatcong - 1.1
• Upper Stewartsville - 1
• Vienna - 1
• Washington - 1