{"icao":"KSDM","name":"Brown Field Municipal Airport","lat":32.5726,"lon":-116.98,"country":"US","tz":"America/Los_Angeles","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":119,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["November","December"],"monthlyHours":[10,12,12,9,2,5,5,8,10,14,18,16],"medianEventHours":2,"season":{"summary":"Fog season runs June through April, peaking in November; fog is mostly a midnight\u20137 AM phenomenon; typically thinning out by 8 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","June","July","August","September","October","November","December"],"timeOfDay":"midnight\u20137 AM","typicallyClearsBy":"8 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 10 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/ksdm/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KSDM","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KSDM.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}