{"location":{"city":"Pułtusk","voivodeship":"Mazowieckie","community":"Gmina Pułtusk","postalCode":"06-102","latitude":52.7024,"longitude":21.0906,"elevation":84},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.8,"monthly":[{"month":1,"outsideTemp":-1.82,"heatingDays":31,"degreeDayNum":614,"solarIrradianceKwhM2":22,"windSpeedAvg":5.49,"relativeHumidity":85.2,"outsideTempOnHeatingDays":-1.82},{"month":2,"outsideTemp":-0.84,"heatingDays":28,"degreeDayNum":532,"solarIrradianceKwhM2":39.8,"windSpeedAvg":5.44,"relativeHumidity":82.9,"outsideTempOnHeatingDays":-0.84},{"month":3,"outsideTemp":2.68,"heatingDays":31,"degreeDayNum":474,"solarIrradianceKwhM2":82.9,"windSpeedAvg":5.48,"relativeHumidity":77,"outsideTempOnHeatingDays":2.68},{"month":4,"outsideTemp":8.58,"heatingDays":29,"degreeDayNum":283,"solarIrradianceKwhM2":126.8,"windSpeedAvg":4.96,"relativeHumidity":71.1,"outsideTempOnHeatingDays":8.44},{"month":5,"outsideTemp":13.91,"heatingDays":26,"degreeDayNum":135,"solarIrradianceKwhM2":162.1,"windSpeedAvg":4.83,"relativeHumidity":69.9,"outsideTempOnHeatingDays":12.88},{"month":6,"outsideTemp":17.35,"heatingDays":17,"degreeDayNum":49,"solarIrradianceKwhM2":165,"windSpeedAvg":4.75,"relativeHumidity":70.1,"outsideTempOnHeatingDays":15.18},{"month":7,"outsideTemp":19.47,"heatingDays":10,"degreeDayNum":18,"solarIrradianceKwhM2":164.1,"windSpeedAvg":4.58,"relativeHumidity":71.1,"outsideTempOnHeatingDays":16.25},{"month":8,"outsideTemp":19.01,"heatingDays":11,"degreeDayNum":22,"solarIrradianceKwhM2":139,"windSpeedAvg":4.42,"relativeHumidity":70.8,"outsideTempOnHeatingDays":16.05},{"month":9,"outsideTemp":14.17,"heatingDays":26,"degreeDayNum":120,"solarIrradianceKwhM2":89.3,"windSpeedAvg":4.8,"relativeHumidity":76.4,"outsideTempOnHeatingDays":13.49},{"month":10,"outsideTemp":8.77,"heatingDays":30,"degreeDayNum":286,"solarIrradianceKwhM2":53.1,"windSpeedAvg":5.13,"relativeHumidity":81.6,"outsideTempOnHeatingDays":8.74},{"month":11,"outsideTemp":3.88,"heatingDays":30,"degreeDayNum":423,"solarIrradianceKwhM2":24.1,"windSpeedAvg":5.16,"relativeHumidity":86.5,"outsideTempOnHeatingDays":3.88},{"month":12,"outsideTemp":-0.13,"heatingDays":31,"degreeDayNum":561,"solarIrradianceKwhM2":15.6,"windSpeedAvg":5.31,"relativeHumidity":86.4,"outsideTempOnHeatingDays":-0.13}],"groundTemp1m":9.2,"groundTemp2m":9.2,"solarIrradianceKwhM2Year":1083.9,"windSpeedAvg":5.03,"relativeHumidityAvg":77.4,"suitability":{"score":66,"rating":"good","color":"lime","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":"2026-05-19T12:07:36.488Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}