{"city":"Portland","region":"US-OR","country":"US","slug":"portland-or","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KPDX","name":"Portland International Airport","subCat1HoursPerYear":75,"forecast":"verifying"},{"icao":"KHIO","name":"Portland Hillsboro Airport","subCat1HoursPerYear":170,"forecast":"verifying"},{"icao":"KTTD","name":"Portland Troutdale Airport","subCat1HoursPerYear":29,"forecast":"verifying"}],"primaryStation":"KPDX","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":75,"fogSeasonPeakMonths":["November","December"],"medianEventHours":2,"season":{"summary":"Fog season runs October through February, peaking in November; fog is mostly a 3 AM\u20138 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","October","November","December"],"timeOfDay":"3 AM\u20138 AM","typicallyClearsBy":"10 AM"}},"links":{"page":"https://fogatlas.org/fog/city/portland-or/","stationPages":["https://fogatlas.org/fog/kpdx/","https://fogatlas.org/fog/khio/","https://fogatlas.org/fog/kttd/"],"verification":"https://fogatlas.org/fog/scorecard/"}}