{"location":{"city":"Chrzanówek","voivodeship":"Mazowieckie","community":"Gmina Opinogóra Górna","postalCode":"06-406","latitude":52.8732,"longitude":20.6409,"elevation":120},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.5,"monthly":[{"month":1,"outsideTemp":-2.06,"heatingDays":31,"degreeDayNum":622,"solarIrradianceKwhM2":22,"windSpeedAvg":5.64,"relativeHumidity":86,"outsideTempOnHeatingDays":-2.06},{"month":2,"outsideTemp":-1.06,"heatingDays":28,"degreeDayNum":538,"solarIrradianceKwhM2":39.8,"windSpeedAvg":5.59,"relativeHumidity":83.5,"outsideTempOnHeatingDays":-1.06},{"month":3,"outsideTemp":2.4,"heatingDays":31,"degreeDayNum":483,"solarIrradianceKwhM2":82.9,"windSpeedAvg":5.64,"relativeHumidity":77.2,"outsideTempOnHeatingDays":2.4},{"month":4,"outsideTemp":8.26,"heatingDays":29,"degreeDayNum":292,"solarIrradianceKwhM2":127.2,"windSpeedAvg":5.1,"relativeHumidity":71.3,"outsideTempOnHeatingDays":8.16},{"month":5,"outsideTemp":13.44,"heatingDays":27,"degreeDayNum":147,"solarIrradianceKwhM2":162.3,"windSpeedAvg":4.96,"relativeHumidity":70.9,"outsideTempOnHeatingDays":12.59},{"month":6,"outsideTemp":16.87,"heatingDays":19,"degreeDayNum":58,"solarIrradianceKwhM2":165.4,"windSpeedAvg":4.88,"relativeHumidity":71.1,"outsideTempOnHeatingDays":14.97},{"month":7,"outsideTemp":19.03,"heatingDays":12,"degreeDayNum":23,"solarIrradianceKwhM2":163.9,"windSpeedAvg":4.71,"relativeHumidity":71.9,"outsideTempOnHeatingDays":16.12},{"month":8,"outsideTemp":18.7,"heatingDays":13,"degreeDayNum":26,"solarIrradianceKwhM2":139,"windSpeedAvg":4.53,"relativeHumidity":70.9,"outsideTempOnHeatingDays":16},{"month":9,"outsideTemp":13.93,"heatingDays":26,"degreeDayNum":126,"solarIrradianceKwhM2":89.3,"windSpeedAvg":4.95,"relativeHumidity":76.4,"outsideTempOnHeatingDays":13.31},{"month":10,"outsideTemp":8.56,"heatingDays":31,"degreeDayNum":292,"solarIrradianceKwhM2":53.1,"windSpeedAvg":5.27,"relativeHumidity":81.8,"outsideTempOnHeatingDays":8.54},{"month":11,"outsideTemp":3.66,"heatingDays":30,"degreeDayNum":430,"solarIrradianceKwhM2":24.1,"windSpeedAvg":5.29,"relativeHumidity":87.1,"outsideTempOnHeatingDays":3.66},{"month":12,"outsideTemp":-0.31,"heatingDays":31,"degreeDayNum":567,"solarIrradianceKwhM2":15.7,"windSpeedAvg":5.44,"relativeHumidity":87.1,"outsideTempOnHeatingDays":-0.31}],"groundTemp1m":9.13,"groundTemp2m":9.13,"solarIrradianceKwhM2Year":1084.7,"windSpeedAvg":5.17,"relativeHumidityAvg":77.9,"suitability":{"score":62,"rating":"fair","color":"yellow","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.2 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:08:23.502Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}