{"location":{"city":"Żebry-Chudek","voivodeship":"Mazowieckie","community":"Gmina Olszewo-Borki","postalCode":"07-416","latitude":53.083,"longitude":21.4373,"elevation":103},"climateZone":4,"standardOutsideTemp":-22,"annualMeanTemp":8.5,"monthly":[{"month":1,"outsideTemp":-2.16,"heatingDays":31,"degreeDayNum":625,"solarIrradianceKwhM2":21.2,"windSpeedAvg":5.41,"relativeHumidity":85.6,"outsideTempOnHeatingDays":-2.16},{"month":2,"outsideTemp":-1.21,"heatingDays":28,"degreeDayNum":542,"solarIrradianceKwhM2":38.9,"windSpeedAvg":5.39,"relativeHumidity":83.1,"outsideTempOnHeatingDays":-1.21},{"month":3,"outsideTemp":2.28,"heatingDays":31,"degreeDayNum":487,"solarIrradianceKwhM2":82.3,"windSpeedAvg":5.43,"relativeHumidity":77.1,"outsideTempOnHeatingDays":2.28},{"month":4,"outsideTemp":8.24,"heatingDays":29,"degreeDayNum":293,"solarIrradianceKwhM2":125.4,"windSpeedAvg":4.94,"relativeHumidity":70.8,"outsideTempOnHeatingDays":8.14},{"month":5,"outsideTemp":13.68,"heatingDays":26,"degreeDayNum":141,"solarIrradianceKwhM2":161.1,"windSpeedAvg":4.84,"relativeHumidity":68.9,"outsideTempOnHeatingDays":12.67},{"month":6,"outsideTemp":17.16,"heatingDays":18,"degreeDayNum":53,"solarIrradianceKwhM2":163.6,"windSpeedAvg":4.76,"relativeHumidity":68.9,"outsideTempOnHeatingDays":15.05},{"month":7,"outsideTemp":19.24,"heatingDays":11,"degreeDayNum":21,"solarIrradianceKwhM2":162.7,"windSpeedAvg":4.58,"relativeHumidity":70.7,"outsideTempOnHeatingDays":16.17},{"month":8,"outsideTemp":18.74,"heatingDays":13,"degreeDayNum":26,"solarIrradianceKwhM2":137.5,"windSpeedAvg":4.41,"relativeHumidity":70.6,"outsideTempOnHeatingDays":16.01},{"month":9,"outsideTemp":13.89,"heatingDays":27,"degreeDayNum":127,"solarIrradianceKwhM2":88,"windSpeedAvg":4.79,"relativeHumidity":76.4,"outsideTempOnHeatingDays":13.29},{"month":10,"outsideTemp":8.43,"heatingDays":31,"degreeDayNum":296,"solarIrradianceKwhM2":51.9,"windSpeedAvg":5.12,"relativeHumidity":81.8,"outsideTempOnHeatingDays":8.42},{"month":11,"outsideTemp":3.55,"heatingDays":30,"degreeDayNum":433,"solarIrradianceKwhM2":23.1,"windSpeedAvg":5.14,"relativeHumidity":86.7,"outsideTempOnHeatingDays":3.55},{"month":12,"outsideTemp":-0.42,"heatingDays":31,"degreeDayNum":570,"solarIrradianceKwhM2":14.8,"windSpeedAvg":5.26,"relativeHumidity":86.8,"outsideTempOnHeatingDays":-0.42}],"groundTemp1m":8.97,"groundTemp2m":8.97,"solarIrradianceKwhM2Year":1070.6,"windSpeedAvg":5.01,"relativeHumidityAvg":77.3,"suitability":{"score":61,"rating":"fair","color":"yellow","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":"2026-05-19T12:08:28.682Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}