Lost Lake UV IndexUnited StatesUTSummit CountyLost Lake1-Day3-DayUV IndexCreated with Highcharts 6.0.2Thu 3 AprFri 4 AprSat 5 AprSun 6 AprMon 7 AprTue 8 AprWed 9 Apr3+ Moderate6+ High8+ Very High11+ Extreme Graph Plots Open in Graphs UV Forecast NOAALost Lake UV forecast issued today at 1:17 pm. Next forecast at approx. 1:17 pm.Get WillyWeather+ to remove ads