{"icao":"KEAU","name":"Chippewa Valley Regional Airport","lat":44.8658,"lon":-91.4843,"country":"US","tz":"America/Chicago","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":70,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["September","December"],"monthlyHours":[7,6,4,3,4,3,7,8,10,8,5,9],"medianEventHours":1,"season":{"summary":"Fog season is year-round, peaking in September; fog is mostly a 1 AM\u20137 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","May","June","July","August","September","October","November","December"],"timeOfDay":"1 AM\u20137 AM","typicallyClearsBy":"9 AM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":30,"peakAtLocal":"2026-09-05T06:00:00-05:00","wording":"Some chance of fog: the calibrated forecast peaks at 30% (visibility under 1 mile) around 6 am Saturday."},"links":{"page":"https://fogatlas.org/fog/keau/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KEAU","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KEAU.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}