New Castle County, DE: Current UV Index and Hourly Forecast

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As of 11:31 AM EST on December 25, 2025, all 26 cities in New Castle County, DE in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Newark, DE with a reading of 0.8.

Over the next 24 hours, the highest UV Index reading in New Castle County, DE is expected to be 1.3 in Newark between 1:00 PM - 2:00 PM EST today.

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Current UV Index in Cities in New Castle County, DE

• Arden - 0.7
• Ardencroft - 0.7
• Ardentown - 0.7
• Bear - 0.7
• Bellefonte - 0.7
• Brookside - 0.8
• Claymont - 0.7
• Delaware City - 0.5
• Edgemoor - 0.7
• Elsmere - 0.7
• Glasgow - 0.7
• Greenville - 0.7
• Hockessin - 0.8
• Middletown - 0.7
• New Castle - 0.7
• Newark - 0.8
• Newport - 0.7
• North Star - 0.8
• Odessa - 0.7
• Pike Creek - 0.8
• Pike Creek Valley - 0.8
• Port Penn - 0.5
• St. Georges - 0.7
• Townsend - 0.7
• Wilmington - 0.7
• Wilmington Manor - 0.7