Massac County UV ForecastUnited StatesILMassac CountyVery high8.4MetropolisVery high UV, 8.4Very high8.4BrookportVery high UV, 8.4Very high9.1Mermet LakeVery high UV, 9.1Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville