Nassau County, NY: Current UV Index and Hourly Forecast

As of 11:41 PM EDT on May 21, 2025, all 131 cities in Nassau County, NY in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Nassau County, NY is expected to be 1.4 in Valley Stream between 12:00 PM - 1:00 PM EDT tomorrow.

Search Cities in Nassau County, NY

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Nassau County, NY as of 11:41 PM EDT, May 21, 2025

Current UV Index in Cities in Nassau County, NY

11:41 PM EDT, May 21, 2025