Sioux County UV ForecastUnited StatesNDSioux CountyHigh7.9Fort YatesHigh UV, 7.9High7.7Cannon BallHigh UV, 7.7High7.9SelfridgeHigh UV, 7.9Cannon BallCedar River National GrasslandFort YatesFort Yates Recreation AreaFroelich Dam State Game Management AreaLake OahePorcupineSelfridgeSlaughterhouse BaySolenStanding Rock Airport