{"icao":"KCHO","name":"Charlottesville Albemarle Airport","lat":38.1386,"lon":-78.4529,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":76,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","January"],"monthlyHours":[10,8,4,2,7,4,8,7,5,7,3,11],"medianEventHours":1,"season":{"summary":"Fog season runs May through March, peaking in December; fog is mostly a 1 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","May","June","July","August","September","October","November","December"],"timeOfDay":"1 AM\u20137 AM","typicallyClearsBy":"9 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 5 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kcho/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KCHO","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KCHO.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}