{"icao":"RKSO","name":"Osan Air Base","lat":37.0915,"lon":127.0294,"country":"KR","tz":"Asia/Seoul","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":60,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["October","November"],"monthlyHours":[6,7,7,4,3,3,1,1,4,9,9,8],"medianEventHours":2,"season":{"summary":"Fog season runs September through June, peaking in October; fog is mostly a 3 AM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","May","June","September","October","November","December"],"timeOfDay":"3 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 4 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/rkso/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=RKSO","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/RKSO.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}