{"location":{"city":"Duranów","voivodeship":"Mazowieckie","community":"Sochaczew","postalCode":"96-500","latitude":52.1884,"longitude":20.2591,"elevation":89},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":9.1,"monthly":[{"month":1,"outsideTemp":-1.34,"heatingDays":31,"degreeDayNum":599,"solarIrradianceKwhM2":23.1,"windSpeedAvg":5.55,"relativeHumidity":83.6,"outsideTempOnHeatingDays":-1.34},{"month":2,"outsideTemp":-0.3,"heatingDays":28,"degreeDayNum":517,"solarIrradianceKwhM2":40.9,"windSpeedAvg":5.48,"relativeHumidity":81.6,"outsideTempOnHeatingDays":-0.3},{"month":3,"outsideTemp":3.1,"heatingDays":31,"degreeDayNum":461,"solarIrradianceKwhM2":84.8,"windSpeedAvg":5.52,"relativeHumidity":76.3,"outsideTempOnHeatingDays":3.1},{"month":4,"outsideTemp":8.87,"heatingDays":29,"degreeDayNum":274,"solarIrradianceKwhM2":128.2,"windSpeedAvg":4.98,"relativeHumidity":70.7,"outsideTempOnHeatingDays":8.74},{"month":5,"outsideTemp":14.05,"heatingDays":26,"degreeDayNum":131,"solarIrradianceKwhM2":161.9,"windSpeedAvg":4.79,"relativeHumidity":70.1,"outsideTempOnHeatingDays":12.99},{"month":6,"outsideTemp":17.53,"heatingDays":16,"degreeDayNum":47,"solarIrradianceKwhM2":165.8,"windSpeedAvg":4.73,"relativeHumidity":69.9,"outsideTempOnHeatingDays":15.2},{"month":7,"outsideTemp":19.57,"heatingDays":10,"degreeDayNum":17,"solarIrradianceKwhM2":163.6,"windSpeedAvg":4.57,"relativeHumidity":70.8,"outsideTempOnHeatingDays":16.27},{"month":8,"outsideTemp":19.22,"heatingDays":10,"degreeDayNum":20,"solarIrradianceKwhM2":140.6,"windSpeedAvg":4.39,"relativeHumidity":70.2,"outsideTempOnHeatingDays":16.05},{"month":9,"outsideTemp":14.41,"heatingDays":25,"degreeDayNum":114,"solarIrradianceKwhM2":90.6,"windSpeedAvg":4.79,"relativeHumidity":75.6,"outsideTempOnHeatingDays":13.57},{"month":10,"outsideTemp":9.18,"heatingDays":30,"degreeDayNum":273,"solarIrradianceKwhM2":54.7,"windSpeedAvg":5.12,"relativeHumidity":80.5,"outsideTempOnHeatingDays":9.14},{"month":11,"outsideTemp":4.28,"heatingDays":30,"degreeDayNum":411,"solarIrradianceKwhM2":25.8,"windSpeedAvg":5.14,"relativeHumidity":85.4,"outsideTempOnHeatingDays":4.28},{"month":12,"outsideTemp":0.29,"heatingDays":31,"degreeDayNum":549,"solarIrradianceKwhM2":17,"windSpeedAvg":5.39,"relativeHumidity":85,"outsideTempOnHeatingDays":0.29}],"groundTemp1m":9.41,"groundTemp2m":9.41,"solarIrradianceKwhM2Year":1096.9,"windSpeedAvg":5.04,"relativeHumidityAvg":76.6,"suitability":{"score":70,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.0 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:21:08.638Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}