{"icao":"CYHM","name":"John C. Munro Hamilton International Airport","lat":43.1735,"lon":-79.9312,"country":"CA","tz":"America/Toronto","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":127,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","December"],"monthlyHours":[22,14,15,11,10,4,4,4,8,10,7,18],"medianEventHours":2,"season":{"summary":"Fog season runs September through May, peaking in January; fog is mostly a 1 AM\u201310 AM phenomenon; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","May","September","October","November","December"],"timeOfDay":"1 AM\u201310 AM","typicallyClearsBy":null}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":3,"peakAtLocal":"2026-09-05T06:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 3%. September typically brings about 8 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/cyhm/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=CYHM","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/CYHM.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}