{"icao":"KHFD","name":"Hartford Brainard Airport","lat":41.7367,"lon":-72.6494,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":46,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","October"],"monthlyHours":[5,4,4,1,2,2,3,1,3,9,4,9],"medianEventHours":1,"season":{"summary":"Fog season is January, February, March, July, September, October, November, December, peaking in October; fog is mostly a 2 AM\u20137 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","July","September","October","November","December"],"timeOfDay":"2 AM\u20137 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":false,"cycle":"2026-09-04T13:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. September typically brings about 3 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/khfd/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KHFD","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KHFD.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}