{"location":{"city":"Świerczyniec","voivodeship":"Śląskie","community":"Bojszowy","postalCode":"43-220","latitude":50.0459,"longitude":19.039,"elevation":246},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.8,"monthly":[{"month":1,"outsideTemp":-1.9,"heatingDays":31,"degreeDayNum":616,"solarIrradianceKwhM2":30.3,"windSpeedAvg":5.47,"relativeHumidity":83.5,"outsideTempOnHeatingDays":-1.9},{"month":2,"outsideTemp":-0.61,"heatingDays":28,"degreeDayNum":526,"solarIrradianceKwhM2":49.4,"windSpeedAvg":5.42,"relativeHumidity":80.9,"outsideTempOnHeatingDays":-0.61},{"month":3,"outsideTemp":3.24,"heatingDays":31,"degreeDayNum":457,"solarIrradianceKwhM2":90.6,"windSpeedAvg":5.46,"relativeHumidity":75.6,"outsideTempOnHeatingDays":3.24},{"month":4,"outsideTemp":8.84,"heatingDays":29,"degreeDayNum":275,"solarIrradianceKwhM2":130.5,"windSpeedAvg":4.87,"relativeHumidity":71.1,"outsideTempOnHeatingDays":8.78},{"month":5,"outsideTemp":13.62,"heatingDays":27,"degreeDayNum":140,"solarIrradianceKwhM2":155.3,"windSpeedAvg":4.59,"relativeHumidity":73.8,"outsideTempOnHeatingDays":12.92},{"month":6,"outsideTemp":17.14,"heatingDays":18,"degreeDayNum":54,"solarIrradianceKwhM2":158.9,"windSpeedAvg":4.41,"relativeHumidity":75,"outsideTempOnHeatingDays":15.01},{"month":7,"outsideTemp":19.04,"heatingDays":11,"degreeDayNum":23,"solarIrradianceKwhM2":160.6,"windSpeedAvg":4.29,"relativeHumidity":74.4,"outsideTempOnHeatingDays":16},{"month":8,"outsideTemp":18.86,"heatingDays":12,"degreeDayNum":25,"solarIrradianceKwhM2":141.7,"windSpeedAvg":4.06,"relativeHumidity":74,"outsideTempOnHeatingDays":15.92},{"month":9,"outsideTemp":14.17,"heatingDays":26,"degreeDayNum":119,"solarIrradianceKwhM2":94,"windSpeedAvg":4.54,"relativeHumidity":77.3,"outsideTempOnHeatingDays":13.47},{"month":10,"outsideTemp":9.33,"heatingDays":30,"degreeDayNum":268,"solarIrradianceKwhM2":59.7,"windSpeedAvg":4.81,"relativeHumidity":80.5,"outsideTempOnHeatingDays":9.26},{"month":11,"outsideTemp":4.41,"heatingDays":30,"degreeDayNum":407,"solarIrradianceKwhM2":32.1,"windSpeedAvg":4.96,"relativeHumidity":84.3,"outsideTempOnHeatingDays":4.41},{"month":12,"outsideTemp":-0.22,"heatingDays":31,"degreeDayNum":564,"solarIrradianceKwhM2":23.1,"windSpeedAvg":5.38,"relativeHumidity":84.2,"outsideTempOnHeatingDays":-0.22}],"groundTemp1m":9.37,"groundTemp2m":9.37,"solarIrradianceKwhM2Year":1126.3,"windSpeedAvg":4.86,"relativeHumidityAvg":77.9,"suitability":{"score":66,"rating":"good","color":"lime","estimatedScop":4.1,"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":"2026-05-19T12:09:06.861Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}