As of 1:35 PM EDT on April 21, 2025, out of 26 cities in New Castle County, DE in our database, 24 cities (92%) have a UV Index reading of High, while 2 cities (8%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Newark, DE with a reading of 6.7.
Over the next 24 hours, the highest UV Index reading in New Castle County, DE is expected to be 7.1 in Delaware City between 12:00 PM - 1:00 PM EDT tomorrow.
Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
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Color | |||||
Risk | Low | Moderate | High | Very High | Extreme |