Sioux County UV ForecastUnited StatesNDSioux CountyVery high8.7Fort YatesVery high UV, 8.7Very high8.6Cannon BallVery high UV, 8.6Very high8.8SelfridgeVery high UV, 8.8Cannon BallCedar River National GrasslandFort YatesFort Yates Recreation AreaFroelich Dam State Game Management AreaLake OahePorcupineSelfridgeSlaughterhouse BaySolenStanding Rock Airport