{"icao":"RJSC","name":"Yamagata Airport","lat":38.4119,"lon":140.371,"country":"JP","tz":"Asia/Tokyo","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":76,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","November"],"monthlyHours":[14,8,3,0,0,0,0,0,0,5,11,11],"medianEventHours":1,"season":{"summary":"Fog season runs October through February, peaking in January; fog is mostly a 7 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","October","November","December"],"timeOfDay":"7 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. dense fog (visibility under a mile) is rare here in September (10-year average)."},"links":{"page":"https://fogatlas.org/fog/rjsc/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=RJSC","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/RJSC.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}