{"location":{"city":"Kaleń","voivodeship":"Łódzkie","community":"Sadkowice","postalCode":"96-206","latitude":51.7047,"longitude":20.5292,"elevation":174},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.8,"monthly":[{"month":1,"outsideTemp":-1.71,"heatingDays":31,"degreeDayNum":611,"solarIrradianceKwhM2":24.6,"windSpeedAvg":5.65,"relativeHumidity":83.7,"outsideTempOnHeatingDays":-1.71},{"month":2,"outsideTemp":-0.63,"heatingDays":28,"degreeDayNum":526,"solarIrradianceKwhM2":42.8,"windSpeedAvg":5.56,"relativeHumidity":81.8,"outsideTempOnHeatingDays":-0.63},{"month":3,"outsideTemp":2.87,"heatingDays":31,"degreeDayNum":469,"solarIrradianceKwhM2":86.9,"windSpeedAvg":5.63,"relativeHumidity":76.2,"outsideTempOnHeatingDays":2.87},{"month":4,"outsideTemp":8.67,"heatingDays":29,"degreeDayNum":280,"solarIrradianceKwhM2":128.2,"windSpeedAvg":5.09,"relativeHumidity":70.3,"outsideTempOnHeatingDays":8.55},{"month":5,"outsideTemp":13.88,"heatingDays":26,"degreeDayNum":135,"solarIrradianceKwhM2":161.2,"windSpeedAvg":4.88,"relativeHumidity":70.1,"outsideTempOnHeatingDays":12.89},{"month":6,"outsideTemp":17.37,"heatingDays":17,"degreeDayNum":50,"solarIrradianceKwhM2":165.9,"windSpeedAvg":4.8,"relativeHumidity":69.9,"outsideTempOnHeatingDays":15.09},{"month":7,"outsideTemp":19.39,"heatingDays":10,"degreeDayNum":20,"solarIrradianceKwhM2":163.5,"windSpeedAvg":4.63,"relativeHumidity":70.5,"outsideTempOnHeatingDays":16.15},{"month":8,"outsideTemp":19.05,"heatingDays":11,"degreeDayNum":23,"solarIrradianceKwhM2":141.1,"windSpeedAvg":4.43,"relativeHumidity":69.9,"outsideTempOnHeatingDays":15.91},{"month":9,"outsideTemp":14.17,"heatingDays":26,"degreeDayNum":120,"solarIrradianceKwhM2":91.7,"windSpeedAvg":4.86,"relativeHumidity":75.6,"outsideTempOnHeatingDays":13.37},{"month":10,"outsideTemp":8.92,"heatingDays":31,"degreeDayNum":281,"solarIrradianceKwhM2":56,"windSpeedAvg":5.17,"relativeHumidity":80.7,"outsideTempOnHeatingDays":8.91},{"month":11,"outsideTemp":4,"heatingDays":30,"degreeDayNum":420,"solarIrradianceKwhM2":27.2,"windSpeedAvg":5.19,"relativeHumidity":85.5,"outsideTempOnHeatingDays":4},{"month":12,"outsideTemp":-0.05,"heatingDays":31,"degreeDayNum":559,"solarIrradianceKwhM2":18.2,"windSpeedAvg":5.51,"relativeHumidity":85.1,"outsideTempOnHeatingDays":-0.05}],"groundTemp1m":9.28,"groundTemp2m":9.28,"solarIrradianceKwhM2Year":1107.3,"windSpeedAvg":5.12,"relativeHumidityAvg":76.6,"suitability":{"score":67,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.1 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:13:20.279Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}