Warren County, NJ: Current UV Index and Hourly Forecast

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As of 3:41 PM EDT on April 22, 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 Phillipsburg, NJ with a reading of 5.6.

Over the next 24 hours, the highest UV Index reading in Warren County, NJ is expected to be 7 in Hackettstown between 1:00 PM - 2:00 PM EDT tomorrow.

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Current UV Index in Cities in Warren County, NJ

• Alpha - 5.6
• Anderson - 5.6
• Asbury - 5.6
• Beattystown - 5.6
• Belvidere - 5.6
• Brainards - 5.6
• Brass Castle - 5.6
• Bridgeville - 5.6
• Broadway - 5.6
• Brookfield - 5.6
• Buttzville - 5.6
• Columbia - 5.6
• Delaware Park - 5.6
• Finesville - 5.6
• Great Meadows - 5.6
• Hackettstown - 5.6
• Hainesburg - 5.6
• Hutchinson - 5.6
• Johnsonburg - 5.6
• Lopatcong Overlook - 5.6
• Marksboro - 5.6
• Mount Hermon - 5.6
• Mountain Lake - 5.6
• New Village - 5.6
• Panther Valley - 5.6
• Phillipsburg - 5.6
• Port Colden - 5.6
• Port Murray - 5.6
• Stewartsville - 5.6
• Upper Pohatcong - 5.6
• Upper Stewartsville - 5.6
• Vienna - 5.6
• Washington - 5.6