{"icao":"KBOS","name":"Boston Logan International Airport","lat":42.362,"lon":-71.0079,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":52,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["October","September"],"monthlyHours":[3,4,5,5,5,4,4,5,5,7,1,4],"medianEventHours":2,"season":{"summary":"Fog season runs December through October, peaking in October; fog is mostly a 1 AM\u20139 AM phenomenon; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","May","June","July","August","September","October","December"],"timeOfDay":"1 AM\u20139 AM","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. September typically brings about 5 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kbos/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KBOS","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KBOS.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}