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

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As of 2:31 PM EST on November 23, 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 Delaware City, DE with a reading of 0.9.

Over the next 24 hours, the highest UV Index reading in New Castle County, DE is expected to be 2.2 in Middletown between 12:00 PM - 1:00 PM EST tomorrow.

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Current UV Index in Cities in New Castle County, DE

• Arden - 0.3
• Ardencroft - 0.3
• Ardentown - 0.3
• Bear - 0.6
• Bellefonte - 0.3
• Brookside - 0.3
• Claymont - 0.3
• Delaware City - 0.9
• Edgemoor - 0.3
• Elsmere - 0.3
• Glasgow - 0.6
• Greenville - 0.3
• Hockessin - 0.3
• Middletown - 0.6
• New Castle - 0.3
• Newark - 0.3
• Newport - 0.3
• North Star - 0.3
• Odessa - 0.6
• Pike Creek - 0.3
• Pike Creek Valley - 0.3
• Port Penn - 0.9
• St. Georges - 0.6
• Townsend - 0.6
• Wilmington - 0.3
• Wilmington Manor - 0.3