{"icao":"KCLM","name":"William R Fairchild International Airport","lat":48.1202,"lon":-123.5,"country":"US","tz":"America/Los_Angeles","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":56,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","January"],"monthlyHours":[8,3,2,2,4,2,6,6,8,5,6,3],"medianEventHours":1,"season":{"summary":"Fog season is year-round, peaking in January; fog is mostly a 2 AM\u20137 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","May","June","July","August","September","October","November","December"],"timeOfDay":"2 AM\u20137 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":true,"public":false,"cycle":"2026-09-04T13:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. September typically brings about 8 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kclm/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KCLM","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KCLM.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}