Sioux County UV ForecastUnited StatesNDSioux CountyVery high8Fort YatesVery high UV, 8High7.8Cannon BallHigh UV, 7.8Very high8.1SelfridgeVery high UV, 8.1Cannon BallCedar River National GrasslandFort YatesFort Yates Recreation AreaFroelich Dam State Game Management AreaLake OahePorcupineSelfridgeSlaughterhouse BaySolenStanding Rock Airport