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

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As of 2:41 PM EST on December 14, 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 Middletown, DE with a reading of 1.2.

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

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Current UV Index in Cities in New Castle County, DE

• Arden - 1.1
• Ardencroft - 1.1
• Ardentown - 1.1
• Bear - 1.2
• Bellefonte - 1.1
• Brookside - 1.1
• Claymont - 1.1
• Delaware City - 1
• Edgemoor - 1.1
• Elsmere - 1.1
• Glasgow - 1.2
• Greenville - 1.1
• Hockessin - 1.1
• Middletown - 1.2
• New Castle - 1.1
• Newark - 1.1
• Newport - 1.1
• North Star - 1.1
• Odessa - 1.2
• Pike Creek - 1.1
• Pike Creek Valley - 1.1
• Port Penn - 1
• St. Georges - 1.2
• Townsend - 1.2
• Wilmington - 1.1
• Wilmington Manor - 1.1