{"location":{"city":"Tresna","voivodeship":"Śląskie","community":"Czernichów","postalCode":"34-311","latitude":49.7397,"longitude":19.2013,"elevation":489},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":7.6,"monthly":[{"month":1,"outsideTemp":-2.94,"heatingDays":31,"degreeDayNum":649,"solarIrradianceKwhM2":31.7,"windSpeedAvg":4.42,"relativeHumidity":85.4,"outsideTempOnHeatingDays":-2.94},{"month":2,"outsideTemp":-1.83,"heatingDays":28,"degreeDayNum":560,"solarIrradianceKwhM2":50.5,"windSpeedAvg":4.43,"relativeHumidity":83.3,"outsideTempOnHeatingDays":-1.83},{"month":3,"outsideTemp":1.86,"heatingDays":31,"degreeDayNum":500,"solarIrradianceKwhM2":91.5,"windSpeedAvg":4.59,"relativeHumidity":79.1,"outsideTempOnHeatingDays":1.86},{"month":4,"outsideTemp":7.4,"heatingDays":29,"degreeDayNum":318,"solarIrradianceKwhM2":129.8,"windSpeedAvg":4.22,"relativeHumidity":74.7,"outsideTempOnHeatingDays":7.35},{"month":5,"outsideTemp":12.36,"heatingDays":29,"degreeDayNum":176,"solarIrradianceKwhM2":152,"windSpeedAvg":3.95,"relativeHumidity":76.7,"outsideTempOnHeatingDays":12.02},{"month":6,"outsideTemp":15.89,"heatingDays":21,"degreeDayNum":78,"solarIrradianceKwhM2":155.8,"windSpeedAvg":3.81,"relativeHumidity":78.3,"outsideTempOnHeatingDays":14.36},{"month":7,"outsideTemp":17.67,"heatingDays":16,"degreeDayNum":42,"solarIrradianceKwhM2":157.1,"windSpeedAvg":3.67,"relativeHumidity":78.1,"outsideTempOnHeatingDays":15.38},{"month":8,"outsideTemp":17.5,"heatingDays":17,"degreeDayNum":45,"solarIrradianceKwhM2":139.9,"windSpeedAvg":3.46,"relativeHumidity":78.3,"outsideTempOnHeatingDays":15.45},{"month":9,"outsideTemp":12.88,"heatingDays":28,"degreeDayNum":155,"solarIrradianceKwhM2":93.5,"windSpeedAvg":3.84,"relativeHumidity":81.2,"outsideTempOnHeatingDays":12.55},{"month":10,"outsideTemp":8.21,"heatingDays":31,"degreeDayNum":303,"solarIrradianceKwhM2":61,"windSpeedAvg":4.04,"relativeHumidity":83.6,"outsideTempOnHeatingDays":8.2},{"month":11,"outsideTemp":3.42,"heatingDays":30,"degreeDayNum":437,"solarIrradianceKwhM2":33.5,"windSpeedAvg":4.14,"relativeHumidity":86.3,"outsideTempOnHeatingDays":3.42},{"month":12,"outsideTemp":-1.39,"heatingDays":31,"degreeDayNum":601,"solarIrradianceKwhM2":24.1,"windSpeedAvg":4.41,"relativeHumidity":86.3,"outsideTempOnHeatingDays":-1.39}],"groundTemp1m":8.45,"groundTemp2m":8.45,"solarIrradianceKwhM2Year":1120.3,"windSpeedAvg":4.08,"relativeHumidityAvg":80.9,"suitability":{"score":51,"rating":"fair","color":"yellow","estimatedScop":4,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:28:16.162Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}