{"location":{"city":"Jazgarzewszczyzna","voivodeship":"Mazowieckie","community":"Gmina Lesznowola","postalCode":"05-501","latitude":52.0668,"longitude":20.9843,"elevation":119},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":9,"monthly":[{"month":1,"outsideTemp":-1.63,"heatingDays":31,"degreeDayNum":608,"solarIrradianceKwhM2":23.3,"windSpeedAvg":5.25,"relativeHumidity":83.6,"outsideTempOnHeatingDays":-1.63},{"month":2,"outsideTemp":-0.58,"heatingDays":28,"degreeDayNum":525,"solarIrradianceKwhM2":41.2,"windSpeedAvg":5.19,"relativeHumidity":81.6,"outsideTempOnHeatingDays":-0.58},{"month":3,"outsideTemp":2.91,"heatingDays":31,"degreeDayNum":467,"solarIrradianceKwhM2":84.6,"windSpeedAvg":5.28,"relativeHumidity":75.9,"outsideTempOnHeatingDays":2.91},{"month":4,"outsideTemp":8.84,"heatingDays":29,"degreeDayNum":275,"solarIrradianceKwhM2":127.2,"windSpeedAvg":4.81,"relativeHumidity":69.8,"outsideTempOnHeatingDays":8.7},{"month":5,"outsideTemp":14.16,"heatingDays":25,"degreeDayNum":128,"solarIrradianceKwhM2":160.9,"windSpeedAvg":4.63,"relativeHumidity":68.8,"outsideTempOnHeatingDays":13.01},{"month":6,"outsideTemp":17.65,"heatingDays":16,"degreeDayNum":45,"solarIrradianceKwhM2":165,"windSpeedAvg":4.56,"relativeHumidity":68.6,"outsideTempOnHeatingDays":15.18},{"month":7,"outsideTemp":19.64,"heatingDays":9,"degreeDayNum":17,"solarIrradianceKwhM2":163.7,"windSpeedAvg":4.38,"relativeHumidity":70,"outsideTempOnHeatingDays":16.22},{"month":8,"outsideTemp":19.19,"heatingDays":10,"degreeDayNum":21,"solarIrradianceKwhM2":140.6,"windSpeedAvg":4.2,"relativeHumidity":69.8,"outsideTempOnHeatingDays":15.98},{"month":9,"outsideTemp":14.29,"heatingDays":25,"degreeDayNum":117,"solarIrradianceKwhM2":90.8,"windSpeedAvg":4.57,"relativeHumidity":75.6,"outsideTempOnHeatingDays":13.47},{"month":10,"outsideTemp":8.97,"heatingDays":30,"degreeDayNum":280,"solarIrradianceKwhM2":55.1,"windSpeedAvg":4.85,"relativeHumidity":80.5,"outsideTempOnHeatingDays":8.94},{"month":11,"outsideTemp":4.05,"heatingDays":30,"degreeDayNum":418,"solarIrradianceKwhM2":26.3,"windSpeedAvg":4.86,"relativeHumidity":85.4,"outsideTempOnHeatingDays":4.05},{"month":12,"outsideTemp":0,"heatingDays":31,"degreeDayNum":558,"solarIrradianceKwhM2":17.1,"windSpeedAvg":5.11,"relativeHumidity":85.2,"outsideTempOnHeatingDays":0}],"groundTemp1m":9.23,"groundTemp2m":9.23,"solarIrradianceKwhM2Year":1095.7,"windSpeedAvg":4.81,"relativeHumidityAvg":76.2,"suitability":{"score":69,"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":"2026-05-19T12:19:39.970Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}