Howard Slough Waterfowl Management Area UV IndexUnited StatesUTDavis CountyHoward Slough Waterfowl Management Area1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAHoward Slough Waterfowl Management Area UV forecast issued yesterday at 6:51 pm. Next forecast at approx. 6:51 pm.Get an account to remove ads