UV Index Today in Nassau County, New York (NY)
Sunday, September 20, 2026 -12:23 PM EDT (GMT-4)
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The average maximum UV Index today across 138 locations in Nassau County, New York (NY), is 0.7. The highest projected maximum is 1.1 in Lido Beach at 1:00 PM EDT, while the lowest projected maximum is 0.5 in Bayville at 10:00 AM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 4.1. The highest projected maximum is 5.4 in Bayville at 2:00 PM EDT, and the lowest projected maximum is 2.7 in Long Beach at 11:00 AM EDT.
3 County Subdivisions in Nassau County, New York (NY)
Maximum UV Index Today
135 Places in Nassau County, New York (NY)
Maximum UV Index Today