{"icao":"KBTM","name":"Bert Mooney Airport","lat":45.9548,"lon":-112.497,"country":"US","tz":"America/Denver","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":25,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","November"],"monthlyHours":[8,3,2,1,1,0,0,1,1,1,4,3],"medianEventHours":1,"season":{"summary":"Fog season runs November through March, peaking in January; fog is mostly a 2 AM\u20139 AM phenomenon; typically thinning out by noon; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","November","December"],"timeOfDay":"2 AM\u20139 AM","typicallyClearsBy":"noon"}},"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 1 hour of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kbtm/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KBTM","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KBTM.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}