Sioux County UV ForecastUnited StatesNDSioux CountyVery high8.2Fort YatesVery high UV, 8.2High7.1Cannon BallHigh UV, 7.1Very high8.3SelfridgeVery high UV, 8.3Cannon BallCedar River National GrasslandFort YatesFort Yates Recreation AreaFroelich Dam State Game Management AreaLake OahePorcupineSelfridgeSlaughterhouse BaySolenStanding Rock Airport