{"icao":"RJAF","name":"Shinshu-Matsumoto Airport","lat":36.1668,"lon":137.923,"country":"JP","tz":"Asia/Tokyo","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":18,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["March","February"],"monthlyHours":[1,2,3,0,0,0,0,0,0,0,2,1],"medianEventHours":1,"season":{"summary":"Fog season is February, March, November, peaking in March; fog is mostly a 8 AM\u20138 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["February","March","November"],"timeOfDay":"8 AM\u20138 AM","typicallyClearsBy":"11 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/rjaf/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=RJAF","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/RJAF.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}