{"icao":"RKTU","name":"Cheongju International Airport/Cheongju Air Base (K-59/G-513)","lat":36.7156,"lon":127.5003,"country":"KR","tz":"Asia/Seoul","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":55,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["October","November"],"monthlyHours":[6,7,4,1,1,0,1,1,4,15,10,8],"medianEventHours":3,"season":{"summary":"Fog season runs September through March, peaking in October; fog is mostly a 6 AM\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 3 hours (local time, 10-year average).","months":["January","February","March","September","October","November","December"],"timeOfDay":"6 AM\u20139 AM","typicallyClearsBy":"11 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/rktu/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=RKTU","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/RKTU.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}