{"icao":"CYNM","name":"Matagami Airport","lat":49.7617,"lon":-77.8028,"country":"CA","tz":"America/Toronto","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":45,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["October","September"],"monthlyHours":[1,2,3,3,4,4,2,6,6,8,4,2],"medianEventHours":1,"season":{"summary":"Fog season runs February through December, peaking in October; fog is mostly a 5 AM\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["February","March","April","May","June","July","August","September","October","November","December"],"timeOfDay":"5 AM\u20139 AM","typicallyClearsBy":"11 AM"}},"forecast":{"covered":true,"public":false,"cycle":"2026-09-04T13:00:00Z","guidanceSignal":true,"wording":"NWS guidance shows a fog signal here in the next 48 hours. This station's calibrated percentages publish after live verification clears the accuracy bar. September typically brings about 6 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/cynm/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=CYNM","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/CYNM.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}