{"location":{"city":"Bełchów","voivodeship":"Łódzkie","community":"Gmina Nieborów","postalCode":"99-418","latitude":52.0223,"longitude":20.0397,"elevation":113},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":9.1,"monthly":[{"month":1,"outsideTemp":-1.26,"heatingDays":31,"degreeDayNum":597,"solarIrradianceKwhM2":23.9,"windSpeedAvg":5.73,"relativeHumidity":83.7,"outsideTempOnHeatingDays":-1.26},{"month":2,"outsideTemp":-0.21,"heatingDays":28,"degreeDayNum":514,"solarIrradianceKwhM2":42,"windSpeedAvg":5.63,"relativeHumidity":81.7,"outsideTempOnHeatingDays":-0.21},{"month":3,"outsideTemp":3.19,"heatingDays":31,"degreeDayNum":459,"solarIrradianceKwhM2":86.4,"windSpeedAvg":5.64,"relativeHumidity":76.4,"outsideTempOnHeatingDays":3.19},{"month":4,"outsideTemp":8.91,"heatingDays":29,"degreeDayNum":273,"solarIrradianceKwhM2":128.8,"windSpeedAvg":5.1,"relativeHumidity":70.6,"outsideTempOnHeatingDays":8.78},{"month":5,"outsideTemp":14.06,"heatingDays":26,"degreeDayNum":130,"solarIrradianceKwhM2":161.8,"windSpeedAvg":4.88,"relativeHumidity":70.2,"outsideTempOnHeatingDays":12.98},{"month":6,"outsideTemp":17.56,"heatingDays":16,"degreeDayNum":47,"solarIrradianceKwhM2":166.2,"windSpeedAvg":4.81,"relativeHumidity":69.7,"outsideTempOnHeatingDays":15.18},{"month":7,"outsideTemp":19.6,"heatingDays":10,"degreeDayNum":17,"solarIrradianceKwhM2":163.2,"windSpeedAvg":4.67,"relativeHumidity":70.5,"outsideTempOnHeatingDays":16.26},{"month":8,"outsideTemp":19.28,"heatingDays":10,"degreeDayNum":20,"solarIrradianceKwhM2":141.1,"windSpeedAvg":4.49,"relativeHumidity":69.9,"outsideTempOnHeatingDays":16.02},{"month":9,"outsideTemp":14.45,"heatingDays":25,"degreeDayNum":113,"solarIrradianceKwhM2":91.2,"windSpeedAvg":4.88,"relativeHumidity":75.5,"outsideTempOnHeatingDays":13.58},{"month":10,"outsideTemp":9.28,"heatingDays":30,"degreeDayNum":270,"solarIrradianceKwhM2":55.5,"windSpeedAvg":5.24,"relativeHumidity":80.4,"outsideTempOnHeatingDays":9.25},{"month":11,"outsideTemp":4.36,"heatingDays":30,"degreeDayNum":409,"solarIrradianceKwhM2":26.7,"windSpeedAvg":5.29,"relativeHumidity":85.5,"outsideTempOnHeatingDays":4.36},{"month":12,"outsideTemp":0.36,"heatingDays":31,"degreeDayNum":546,"solarIrradianceKwhM2":17.8,"windSpeedAvg":5.59,"relativeHumidity":85.1,"outsideTempOnHeatingDays":0.36}],"groundTemp1m":9.39,"groundTemp2m":9.39,"solarIrradianceKwhM2Year":1104.5,"windSpeedAvg":5.16,"relativeHumidityAvg":76.6,"suitability":{"score":71,"rating":"good","color":"lime","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":"2026-05-19T12:12:27.163Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}