{"icao":"KAOO","name":"Altoona Blair County Airport","lat":40.2964,"lon":-78.32,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":87,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","January"],"monthlyHours":[12,8,5,3,7,3,5,10,12,10,4,7],"medianEventHours":2,"season":{"summary":"Fog season is year-round, peaking in January; fog is mostly a 2 AM\u20138 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","May","June","July","August","September","October","November","December"],"timeOfDay":"2 AM\u20138 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":8,"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 8%. September typically brings about 12 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kaoo/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KAOO","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KAOO.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}