{"icao":"CYSJ","name":"Saint John Airport","lat":45.3161,"lon":-65.8903,"country":"CA","tz":"America/Moncton","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":282,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["July","August"],"monthlyHours":[2,12,16,10,24,38,70,51,32,15,6,2],"medianEventHours":2,"season":{"summary":"Fog season runs May through September, peaking in July; fog is mostly a 11 PM\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["May","June","July","August","September"],"timeOfDay":"11 PM\u20139 AM","typicallyClearsBy":"11 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":32,"peakAtLocal":"2026-09-05T06:00:00-03:00","wording":"Some chance of fog: the calibrated forecast peaks at 32% (visibility under 1 mile) around 6 am Saturday."},"links":{"page":"https://fogatlas.org/fog/cysj/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=CYSJ","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/CYSJ.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}