Chehalis River - Mox Chuck Slough Entrance UV IndexUnited StatesWAGrays Harbor CountyChehalis River - Mox Chuck Slough Entrance1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAChehalis River - Mox Chuck Slough Entrance UV forecast issued today at 12:19 pm. Next forecast at approx. 12:19 pm.Get an account to remove ads