{"icao":"KMTH","name":"Florida Keys Marathon International Airport","lat":24.726,"lon":-81.0514,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":2,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["August","January"],"monthlyHours":[0,0,0,0,0,0,0,1,0,0,0,0],"medianEventHours":null,"season":{"summary":"Florida Keys Marathon International Airport has no real fog season \u2014 dense fog is rare in every month (under 2 hours even in the peak month).","months":[],"timeOfDay":null,"typicallyClearsBy":null}},"forecast":{"covered":true,"public":false,"cycle":"2026-09-04T13:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in September."},"links":{"page":"https://fogatlas.org/fog/kmth/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KMTH","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KMTH.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}