Potomac River - Upper Machodoc Creek Entrance UV IndexUnited StatesVAKing George CountyPotomac River - Upper Machodoc Creek Entrance1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAPotomac River - Upper Machodoc Creek Entrance UV forecast issued yesterday at 3:17 pm. Next forecast at approx. 3:17 pm.Get WillyWeather+ to remove ads