{"icao":"KLWB","name":"Greenbrier Valley Airport","lat":37.8579,"lon":-80.4004,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":386,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","August"],"monthlyHours":[10,13,8,7,25,40,62,73,73,39,12,10],"medianEventHours":3,"season":{"summary":"Fog season runs May through October, peaking in August; fog is mostly a 3 AM\u20138 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 3 hours (local time, 10-year average).","months":["May","June","July","August","September","October"],"timeOfDay":"3 AM\u20138 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":53,"peakAtLocal":"2026-09-05T07:00:00-04:00","window":{"from":"2026-09-05T05:00:00-04:00","to":"2026-09-05T08:00:00-04:00"},"wording":"Yes, fog is likely: 53% chance of fog (visibility under 1 mile) around 7 am Saturday, with the fog window roughly 5 am to 8 am local time."},"links":{"page":"https://fogatlas.org/fog/klwb/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KLWB","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KLWB.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}