{"city":"St Louis","region":"US-MO","country":"US","slug":"st-louis-mo","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KSTL","name":"St. Louis Lambert International Airport","subCat1HoursPerYear":21,"forecast":"verifying"},{"icao":"KSUS","name":"Spirit of St Louis Airport","subCat1HoursPerYear":35,"forecast":"verifying"}],"primaryStation":"KSTL","forecast":{"covered":true,"public":false,"cycle":"2026-08-16T00:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in August."},"climatology":{"subCat1HoursPerYear":21,"fogSeasonPeakMonths":["January","December"],"medianEventHours":2,"season":{"summary":"Fog season runs December through February, peaking in January; fog is mostly a 2 AM\u20139 AM phenomenon; typically thinning out by 1 PM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","December"],"timeOfDay":"2 AM\u20139 AM","typicallyClearsBy":"1 PM"}},"links":{"page":"https://fogatlas.org/fog/city/st-louis-mo/","stationPages":["https://fogatlas.org/fog/kstl/","https://fogatlas.org/fog/ksus/"],"verification":"https://fogatlas.org/fog/scorecard/"}}