{"icao":"CYFS","name":"Fort Simpson Airport","lat":61.7602,"lon":-121.237,"country":"CA","tz":"America/Inuvik","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":42,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["October","September"],"monthlyHours":[1,1,1,2,0,0,5,4,7,15,4,3],"medianEventHours":1,"season":{"summary":"Fog season runs July through November, peaking in October; fog is mostly a 4 AM\u201310 AM phenomenon; typically thinning out by 1 PM; a typical event lasts about 1 hour (local time, 10-year average).","months":["July","August","September","October","November"],"timeOfDay":"4 AM\u201310 AM","typicallyClearsBy":"1 PM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":3,"peakAtLocal":"2026-09-04T08:00:00-06:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 3%. September typically brings about 7 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/cyfs/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=CYFS","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/CYFS.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}