{"icao":"KCEF","name":"Westover Metropolitan Airport / Westover Air Reserve Base","lat":42.194,"lon":-72.5348,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":54,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","October"],"monthlyHours":[6,5,5,1,2,3,4,3,4,8,4,10],"medianEventHours":2,"season":{"summary":"Fog season runs June through March, peaking in December; fog is mostly a 4 AM\u20137 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","June","July","August","September","October","November","December"],"timeOfDay":"4 AM\u20137 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":3,"peakAtLocal":"2026-09-05T05:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 3%. September typically brings about 4 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kcef/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KCEF","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KCEF.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}