{"icao":"KOLM","name":"Olympia Regional Airport","lat":46.9694,"lon":-122.903,"country":"US","tz":"America/Los_Angeles","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":245,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["November","January"],"monthlyHours":[49,25,16,7,3,2,1,3,9,39,50,44],"medianEventHours":2,"season":{"summary":"Fog season runs October through March, peaking in November; fog is mostly a 10 PM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","October","November","December"],"timeOfDay":"10 PM\u20138 AM","typicallyClearsBy":"10 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 9 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kolm/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KOLM","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KOLM.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}