{"icao":"KATL","name":"Hartsfield Jackson Atlanta International Airport","lat":33.6367,"lon":-84.4281,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":56,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","February"],"monthlyHours":[11,12,6,2,2,0,0,1,0,1,6,16],"medianEventHours":3,"season":{"summary":"Fog season runs November through March, peaking in December; fog is mostly a 1 AM\u20139 AM phenomenon; typically thinning out by 2 PM; a typical event lasts about 3 hours (local time, 10-year average).","months":["January","February","March","November","December"],"timeOfDay":"1 AM\u20139 AM","typicallyClearsBy":"2 PM"}},"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. dense fog (visibility under a mile) is rare here in September."},"links":{"page":"https://fogatlas.org/fog/katl/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KATL","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KATL.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}