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

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As of 11:34 AM EDT on June 28, 2025, all 26 cities in New Castle County, DE in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Wilmington, DE with a reading of 6.5.

Over the next 24 hours, the highest UV Index reading in New Castle County, DE is expected to be 9.3 in Delaware City between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in New Castle County, DE

• Arden - 6.5
• Ardencroft - 6.5
• Ardentown - 6.5
• Bear - 5.8
• Bellefonte - 6.5
• Brookside - 6.5
• Claymont - 6.5
• Delaware City - 6.5
• Edgemoor - 6.5
• Elsmere - 6.5
• Glasgow - 5.8
• Greenville - 6.5
• Hockessin - 6.5
• Middletown - 5.8
• New Castle - 6.5
• Newark - 6.5
• Newport - 6.5
• North Star - 6.5
• Odessa - 5.8
• Pike Creek - 6.5
• Pike Creek Valley - 6.5
• Port Penn - 6.5
• St. Georges - 5.8
• Townsend - 5.8
• Wilmington - 6.5
• Wilmington Manor - 6.5