UV Index Today in Nassau County, New York (NY) Friday, May 22, 2026 -1:44 PMEDT (GMT-4) The average maximum UV Index today across 138 locations in Nassau County, New York (NY) , is 8.1. The highest projected maximum is 8.3 in Hempstead at 1:00 PM EDT, while the lowest projected maximum is 7.4 in Bayville at 2:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 1.2. The highest projected maximum is 1.3 in Hempstead at 12:00 PM EDT, and the lowest projected maximum is 0.8 in New York at 12:00 PM 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
Albertson - 8.1
Amityville - 8.3
Atlantic Beach - 8
Baldwin - 8.3
Barnum Island - 8
Baxter Estates - 8.1
Bay Park - 8.1
Bayville - 7.4
Bellerose - 8.1
Bellerose Terrace - 8.1
Bellmore - 8.3
Bethpage - 8.3
Brookville - 8.3
Carle Place - 8.3
Cedarhurst - 8.1
Cold Spring Harbor - 8.3
East Atlantic Beach - 8
East Farmingdale - 8.3
East Hills - 8.1
East Massapequa - 8.3
East Meadow - 8.3
East Norwich - 8.3
East Rockaway - 8.1
East Williston - 8.1
Elmont - 8.1
Farmingdale - 8.3
Floral Park - 8.1
Flower Hill - 8.1
Franklin Square - 8.1
Freeport - 8.3
Garden City - 8.1
Garden City Park - 8.1
Garden City South - 8.1
Glen Cove - 8.1
Glen Head - 8.3
Glenwood Landing - 8.1
Great Neck - 8.1
Great Neck Estates - 8.1
Great Neck Gardens - 8.1
Great Neck Plaza - 8.1
Greenvale - 8.1
Harbor Isle - 8
Hempstead - 8.3
Herricks - 8.1
Hewlett - 8.1
Hewlett Harbor - 8.1
Hewlett Neck - 8
Hicksville - 8.3
Inwood - 8
Island Park - 8
Jericho - 8.3
Kensington - 8.1
Kings Point - 8.1
Lake Success - 8.1
Lakeview - 8.1
Lattingtown - 7.4
Laurel Hollow - 8.3
Lawrence - 8
Levittown - 8.3
Lido Beach - 8.1
Locust Valley - 7.4
Long Beach - 8
Lynbrook - 8.1
Malverne - 8.1
Malverne Park Oaks - 8.1
Manhasset - 8.1
Manhasset Hills - 8.1
Manorhaven - 8.1
Massapequa - 8.3
Massapequa Park - 8.3
Matinecock - 8.3
Melville - 8.3
Merrick - 8.3
Mill Neck - 7.4
Mineola - 8.1
Munsey Park - 8.1
Muttontown - 8.3
New Cassel - 8.3
New Hyde Park - 8.1
New York - 8.2
North Amityville - 8.3
North Bellmore - 8.3
North Hills - 8.1
North Lynbrook - 8.1
North Massapequa - 8.3
North Merrick - 8.3
North New Hyde Park - 8.1
North Valley Stream - 8.1
North Wantagh - 8.3
Oceanside - 8.1
Old Bethpage - 8.3
Old Brookville - 8.3
Old Westbury - 8.3
Oyster Bay - 8.3
Oyster Bay Cove - 8.3
Plainedge - 8.3
Plainview - 8.3
Plandome - 8.1
Plandome Heights - 8.1
Plandome Manor - 8.1
Point Lookout - 8.1
Port Washington - 8.1
Port Washington North - 8.1
Rockville Centre - 8.1
Roosevelt - 8.3
Roslyn - 8.1
Roslyn Estates - 8.1
Roslyn Harbor - 8.1
Roslyn Heights - 8.1
Russell Gardens - 8.1
Saddle Rock - 8.1
Salisbury - 8.3
Sands Point - 8.1
Sea Cliff - 8.1
Seaford - 8.3
Searingtown - 8.1
South Farmingdale - 8.3
South Floral Park - 8.1
South Hempstead - 8.3
South Valley Stream - 8.1
Stewart Manor - 8.1
Syosset - 8.3
Thomaston - 8.1
Uniondale - 8.3
University Gardens - 8.1
Upper Brookville - 8.3
Valley Stream - 8.1
Wantagh - 8.3
Westbury - 8.3
West Hempstead - 8.1
West Hills - 8.3
Williston Park - 8.1
Woodbury - 8.3
Woodmere - 8.1
Woodsburgh - 8