{"icao":"KPIR","name":"Pierre Regional Airport","lat":44.3827,"lon":-100.286,"country":"US","tz":"America/Chicago","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":71,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["January","February"],"monthlyHours":[14,12,8,5,1,2,2,4,3,1,6,13],"medianEventHours":2,"season":{"summary":"Fog season is January, February, March, April, August, November, December, peaking in January; fog is mostly a 4 AM\u20139 AM phenomenon; typically thinning out by noon; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","August","November","December"],"timeOfDay":"4 AM\u20139 AM","typicallyClearsBy":"noon"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":1,"peakAtLocal":"2026-09-04T09:00:00-05:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 1%. September typically brings about 3 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kpir/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KPIR","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KPIR.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}