{"icao":"RJCH","name":"Hakodate Airport","lat":41.77,"lon":140.822,"country":"JP","tz":"Asia/Tokyo","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":58,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["June","July"],"monthlyHours":[10,7,3,3,7,20,18,1,0,0,2,8],"medianEventHours":1,"season":{"summary":"Fog season is January, February, May, June, July, December, peaking in June; fog is mostly a 2 AM\u20136 AM phenomenon; typically thinning out by 8 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","May","June","July","December"],"timeOfDay":"2 AM\u20136 AM","typicallyClearsBy":"8 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/rjch/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=RJCH","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/RJCH.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}