Hempstead Harbor - Mosquito Cove UV IndexUnited StatesNYNassau CountyHempstead Harbor - Mosquito Cove1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAHempstead Harbor - Mosquito Cove UV forecast issued yesterday at 2:17 pm. Next forecast at approx. 2:17 pm.Get WillyWeather+ to remove ads