{"icao":"KGPI","name":"Glacier Park International Airport","lat":48.3105,"lon":-114.256,"country":"US","tz":"America/Denver","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":98,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","November"],"monthlyHours":[30,7,4,3,2,2,2,4,5,9,18,14],"medianEventHours":1,"season":{"summary":"Fog season runs October through January, peaking in January; fog is mostly a 11 PM\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","October","November","December"],"timeOfDay":"11 PM\u20139 AM","typicallyClearsBy":"11 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 5 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kgpi/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KGPI","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KGPI.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}