{"icao":"CYYC","name":"Calgary International Airport","lat":51.1188,"lon":-114.0099,"country":"CA","tz":"America/Edmonton","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":51,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","March"],"monthlyHours":[9,5,8,4,0,0,0,0,1,7,8,8],"medianEventHours":2,"season":{"summary":"Fog season runs October through April, peaking in January; fog is mostly a 6 AM\u201311 AM phenomenon; typically thinning out by 3 PM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","October","November","December"],"timeOfDay":"6 AM\u201311 AM","typicallyClearsBy":"3 PM"}},"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 1 hour of dense fog here."},"links":{"page":"https://fogatlas.org/fog/cyyc/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=CYYC","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/CYYC.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}