{"icao":"LIRZ","name":"Perugia San Francesco d'Assisi \u2013 Umbria International Airport","lat":43.0959,"lon":12.5132,"country":"IT","tz":"Europe/Rome","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":81,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","January"],"monthlyHours":[18,2,2,1,1,1,0,0,1,4,16,42],"medianEventHours":2,"season":{"summary":"Fog season runs November through January, peaking in December; fog is mostly a midnight\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","November","December"],"timeOfDay":"midnight\u20139 AM","typicallyClearsBy":"11 AM"}},"forecast":{"covered":false,"public":false,"wording":"No fog forecast feed exists for this station. September typically brings about 1 hour of dense fog here (10-year average)."},"links":{"page":"https://fogatlas.org/fog/lirz/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=LIRZ","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/LIRZ.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}