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

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As of 12:46 PM EDT on May 24, 2026, out of 26 cities in New Castle County, DE in our database, 18 cities (69%) have a UV Index reading of Low, while 8 cities (31%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Delaware City, DE with a reading of 2.9.

Over the next 24 hours, the highest UV Index reading in New Castle County, DE is expected to be 2.9 in Delaware City between 12:00 PM - 1:00 PM EDT today.

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Current UV Index in Cities in New Castle County, DE

• Arden - 1.7
• Ardencroft - 1.7
• Ardentown - 1.7
• Bear - 2.5
• Bellefonte - 1.7
• Brookside - 1.4
• Claymont - 1.7
• Delaware City - 2.9
• Edgemoor - 1.7
• Elsmere - 1.7
• Glasgow - 2.5
• Greenville - 1.7
• Hockessin - 1.4
• Middletown - 2.5
• New Castle - 1.7
• Newark - 1.4
• Newport - 1.7
• North Star - 1.4
• Odessa - 2.5
• Pike Creek - 1.4
• Pike Creek Valley - 1.4
• Port Penn - 2.9
• St. Georges - 2.5
• Townsend - 2.5
• Wilmington - 1.7
• Wilmington Manor - 1.7