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

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As of 1:38 PM EDT on April 19, 2026, 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 Delaware City, DE with a reading of 1.9.

Over the next 24 hours, the highest UV Index reading in New Castle County, DE is expected to be 5.6 in Middletown between 12:00 PM - 1:00 PM EDT tomorrow.

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Current UV Index in Cities in New Castle County, DE

• Arden - 0.8
• Ardencroft - 0.8
• Ardentown - 0.8
• Bear - 1.2
• Bellefonte - 0.8
• Brookside - 0.7
• Claymont - 0.8
• Delaware City - 1.9
• Edgemoor - 0.8
• Elsmere - 0.8
• Glasgow - 1.2
• Greenville - 0.8
• Hockessin - 0.7
• Middletown - 1.2
• New Castle - 0.8
• Newark - 0.7
• Newport - 0.8
• North Star - 0.7
• Odessa - 1.2
• Pike Creek - 0.7
• Pike Creek Valley - 0.7
• Port Penn - 1.9
• St. Georges - 1.2
• Townsend - 1.2
• Wilmington - 0.8
• Wilmington Manor - 0.8