The study of the urban heat island (UHI) is of great importance in the context of climate change, where increasingly frequent and intense extreme thermal events will generate lethal effects in cities. In this work, we characterize the UHI of the urban area of Zaragoza (Spain) using a thermohygrometric network of hourly observatories composed of 21 sensors, from March 2015 to February 2021. Due to the diversity of urban spaces and the high volume of information (≈ 995,000 observations), we performed an exhaustive quality control. Incorporating a synoptic analysis to better identify atmospheric situations not recorded by sensors. The results indicate that 1.6% of observations are removed, mainly due to outliers and hourly variability. We demonstrate that the UHI displays the classical center-periphery pattern with intensity values around 2 °C, but with variations due to the urban structure. We also observe seasonal UHI variations that intensify, especially in winter and autumn nights. Finally, this characterization confirms the differences in UHI intensity are due to their structural and climatic characteristics, which can ultimately guide the logical urban planning design of Zaragoza, and other Mediterranean-like cities with a similar urban environment.

在气候变化的背景下，城市热岛（UHI）的研究具有重要意义，日益频繁和激烈的极端高温事件将对城市产生致命影响。在这项工作中，我们从 2015 年 3 月到 2021 年 2 月，使用由 21 个传感器组成的每小时观测站的热湿度测量网络来描述萨拉戈萨（西班牙）市区的 UHI。由于城市空间的多样性和大量信息（ ≈ 995,000 次观察），我们进行了详尽的质量控制。结合天气分析，以更好地识别传感器未记录的大气情况。结果表明，1.6% 的观测值被删除，主要是由于异常值和每小时的变化。我们证明 UHI 显示经典的中心-外围模式，强度值约为 2°C，但由于城市结构而有所不同。我们还观察到季节性 UHI 变化加剧，尤其是在冬季和秋季的夜晚。最后，这一特征证实了 UHI 强度的差异是由于它们的结构和气候特征，这最终可以指导萨拉戈萨和其他具有类似城市环境的地中海式城市的逻辑城市规划设计。