{"location":{"city":"Brzozowy Kąt","voivodeship":"Mazowieckie","community":"Czarnia","postalCode":"07-431","latitude":53.3667,"longitude":21.2379,"elevation":122},"climateZone":4,"standardOutsideTemp":-22,"annualMeanTemp":8.3,"monthly":[{"month":1,"outsideTemp":-2.27,"heatingDays":31,"degreeDayNum":628,"solarIrradianceKwhM2":20.3,"windSpeedAvg":5.24,"relativeHumidity":86.3,"outsideTempOnHeatingDays":-2.27},{"month":2,"outsideTemp":-1.33,"heatingDays":28,"degreeDayNum":546,"solarIrradianceKwhM2":37.6,"windSpeedAvg":5.23,"relativeHumidity":83.8,"outsideTempOnHeatingDays":-1.33},{"month":3,"outsideTemp":2.12,"heatingDays":31,"degreeDayNum":492,"solarIrradianceKwhM2":80.8,"windSpeedAvg":5.27,"relativeHumidity":77.6,"outsideTempOnHeatingDays":2.12},{"month":4,"outsideTemp":8.08,"heatingDays":29,"degreeDayNum":298,"solarIrradianceKwhM2":124.8,"windSpeedAvg":4.82,"relativeHumidity":71.1,"outsideTempOnHeatingDays":7.94},{"month":5,"outsideTemp":13.48,"heatingDays":26,"degreeDayNum":147,"solarIrradianceKwhM2":160.8,"windSpeedAvg":4.76,"relativeHumidity":69,"outsideTempOnHeatingDays":12.49},{"month":6,"outsideTemp":16.89,"heatingDays":18,"degreeDayNum":57,"solarIrradianceKwhM2":162.7,"windSpeedAvg":4.68,"relativeHumidity":69.6,"outsideTempOnHeatingDays":14.92},{"month":7,"outsideTemp":18.94,"heatingDays":12,"degreeDayNum":24,"solarIrradianceKwhM2":161.8,"windSpeedAvg":4.48,"relativeHumidity":71.9,"outsideTempOnHeatingDays":16.12},{"month":8,"outsideTemp":18.46,"heatingDays":14,"degreeDayNum":29,"solarIrradianceKwhM2":136.6,"windSpeedAvg":4.3,"relativeHumidity":72.1,"outsideTempOnHeatingDays":15.91},{"month":9,"outsideTemp":13.73,"heatingDays":27,"degreeDayNum":131,"solarIrradianceKwhM2":87.5,"windSpeedAvg":4.68,"relativeHumidity":77.2,"outsideTempOnHeatingDays":13.19},{"month":10,"outsideTemp":8.31,"heatingDays":31,"degreeDayNum":300,"solarIrradianceKwhM2":51.2,"windSpeedAvg":4.98,"relativeHumidity":82.4,"outsideTempOnHeatingDays":8.31},{"month":11,"outsideTemp":3.41,"heatingDays":30,"degreeDayNum":437,"solarIrradianceKwhM2":22.6,"windSpeedAvg":4.98,"relativeHumidity":87.4,"outsideTempOnHeatingDays":3.41},{"month":12,"outsideTemp":-0.5,"heatingDays":31,"degreeDayNum":573,"solarIrradianceKwhM2":14.2,"windSpeedAvg":5.09,"relativeHumidity":87.4,"outsideTempOnHeatingDays":-0.5}],"groundTemp1m":8.8,"groundTemp2m":8.8,"solarIrradianceKwhM2Year":1060.9,"windSpeedAvg":4.88,"relativeHumidityAvg":78,"suitability":{"score":59,"rating":"fair","color":"yellow","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":"2026-05-19T12:19:23.400Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}