UV Index Today in New Castle County, Delaware (DE)
Sunday, September 20, 2026 -12:23 PM EDT (GMT-4)
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The average maximum UV Index today across 27 locations in New Castle County, Delaware (DE), is 4.7. The highest projected maximum is 6.2 in Smyrna at 1:00 PM EDT, while the lowest projected maximum is 4 in Newark at 3:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 3.2. The highest projected maximum is 4.9 in Middletown at 2:00 PM EDT, and the lowest projected maximum is 2 in Newark at 2:00 PM EDT.
27 Places in New Castle County, Delaware (DE)
Maximum UV Index Today