Johnson County UV ForecastUnited StatesTNJohnson CountyExtreme11.2Mountain CityExtreme UV, 11.2Extreme11.2Shady ValleyExtreme UV, 11.2Extreme11.4TradeExtreme UV, 11.4ButlerCherokee National ForestJohnson County AirportLaurel BloomeryMountain CityNevaShady ValleyTrade