{"icao":"CYYT","name":"St. John's International Airport","lat":47.6186,"lon":-52.7519,"country":"CA","tz":"America/St_Johns","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":535,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["May","April"],"monthlyHours":[32,26,37,70,80,70,44,19,33,35,51,34],"medianEventHours":2,"season":{"summary":"Fog season runs September through July, peaking in May; fog here can hit at any hour of the day; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","May","June","July","September","October","November","December"],"timeOfDay":"any hour of the day","typicallyClearsBy":null}},"forecast":{"covered":true,"public":false,"inIssuance":false,"wording":"Forecast feed initializing for this station. September typically brings about 33 hours of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/cyyt/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=CYYT","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/CYYT.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}