{"icao":"KLFI","name":"Langley Air Force Base","lat":37.0829,"lon":-76.3605,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":38,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","February"],"monthlyHours":[4,7,4,1,4,1,0,1,1,4,4,8],"medianEventHours":1,"season":{"summary":"Fog season is January, February, March, May, October, November, December, peaking in December; fog is mostly a 2 AM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","May","October","November","December"],"timeOfDay":"2 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":0,"peakAtLocal":"2026-09-04T10:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 0%. September typically brings about 1 hour of dense fog here."},"links":{"page":"https://fogatlas.org/fog/klfi/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KLFI","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KLFI.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}