Whittier Narrows Dam County Recreational Area UV IndexUnited StatesCALos Angeles CountyWhittier Narrows Dam County Recreational Area1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAWhittier Narrows Dam County Recreational Area UV forecast issued yesterday at 12:18 pm. Next forecast at approx. 12:18 pm.Get WillyWeather+ to remove ads