Massac County UV ForecastUnited StatesILMassac CountyModerate3MetropolisModerate UV, 3Moderate3BrookportModerate UV, 3Moderate3.3Mermet LakeModerate UV, 3.3Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville