Mercer County, NJ: Current UV Index and Hourly Forecast

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As of 1:21 PM EST on February 24, 2025, all 17 cities in Mercer County, NJ in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Titusville, NJ with a reading of 3.1.

Over the next 24 hours, the highest UV Index reading in Mercer County, NJ is expected to be 3.1 in Titusville between 1:00 PM - 2:00 PM EST today.

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Current UV Index in Cities in Mercer County, NJ

• Groveville - 3
• Hamilton Square - 3
• Hightstown - 3
• Hopewell - 3
• Lawrenceville - 3
• Mercerville - 3
• Pennington - 3
• Princeton - 3
• Princeton Junction - 3
• The College of New Jersey - 3
• Titusville - 3.1
• Trenton - 3
• Twin Rivers - 3
• Washington Crossing - 3
• White Horse - 3
• Windsor - 3
• Yardville - 3