{"location":{"city":"Łajski","voivodeship":"Mazowieckie","community":"Gmina Wieliszew","postalCode":"05-124","latitude":52.4289,"longitude":20.9421,"elevation":79},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":9.1,"monthly":[{"month":1,"outsideTemp":-1.52,"heatingDays":31,"degreeDayNum":605,"solarIrradianceKwhM2":22.1,"windSpeedAvg":5.23,"relativeHumidity":84.2,"outsideTempOnHeatingDays":-1.52},{"month":2,"outsideTemp":-0.45,"heatingDays":28,"degreeDayNum":521,"solarIrradianceKwhM2":39.8,"windSpeedAvg":5.2,"relativeHumidity":81.9,"outsideTempOnHeatingDays":-0.45},{"month":3,"outsideTemp":3.05,"heatingDays":31,"degreeDayNum":463,"solarIrradianceKwhM2":82.9,"windSpeedAvg":5.25,"relativeHumidity":76.3,"outsideTempOnHeatingDays":3.05},{"month":4,"outsideTemp":9,"heatingDays":29,"degreeDayNum":270,"solarIrradianceKwhM2":126.4,"windSpeedAvg":4.8,"relativeHumidity":70.3,"outsideTempOnHeatingDays":8.82},{"month":5,"outsideTemp":14.3,"heatingDays":25,"degreeDayNum":125,"solarIrradianceKwhM2":161,"windSpeedAvg":4.66,"relativeHumidity":69.3,"outsideTempOnHeatingDays":13.13},{"month":6,"outsideTemp":17.71,"heatingDays":15,"degreeDayNum":43,"solarIrradianceKwhM2":164.2,"windSpeedAvg":4.6,"relativeHumidity":69.7,"outsideTempOnHeatingDays":15.25},{"month":7,"outsideTemp":19.73,"heatingDays":9,"degreeDayNum":16,"solarIrradianceKwhM2":163.5,"windSpeedAvg":4.4,"relativeHumidity":71,"outsideTempOnHeatingDays":16.27},{"month":8,"outsideTemp":19.28,"heatingDays":10,"degreeDayNum":19,"solarIrradianceKwhM2":139.2,"windSpeedAvg":4.24,"relativeHumidity":71,"outsideTempOnHeatingDays":16.11},{"month":9,"outsideTemp":14.42,"heatingDays":26,"degreeDayNum":113,"solarIrradianceKwhM2":89.5,"windSpeedAvg":4.59,"relativeHumidity":76.3,"outsideTempOnHeatingDays":13.63},{"month":10,"outsideTemp":9.07,"heatingDays":30,"degreeDayNum":276,"solarIrradianceKwhM2":53.5,"windSpeedAvg":4.9,"relativeHumidity":81.1,"outsideTempOnHeatingDays":9.03},{"month":11,"outsideTemp":4.15,"heatingDays":30,"degreeDayNum":415,"solarIrradianceKwhM2":24.7,"windSpeedAvg":4.89,"relativeHumidity":85.8,"outsideTempOnHeatingDays":4.15},{"month":12,"outsideTemp":0.11,"heatingDays":31,"degreeDayNum":554,"solarIrradianceKwhM2":16,"windSpeedAvg":5.08,"relativeHumidity":85.6,"outsideTempOnHeatingDays":0.11}],"groundTemp1m":9.46,"groundTemp2m":9.46,"solarIrradianceKwhM2Year":1082.6,"windSpeedAvg":4.82,"relativeHumidityAvg":76.9,"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":"2026-05-19T12:08:27.702Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}