 This study is the first to conduct a large-scale assessment of urban heat island, UHI, and urban heat sink, UHS, in Morocco, revealing that UHI amplitudes are higher during daytime and increase with urban area size. The analysis also suggests that adapted trees can be used as a natural cooling mechanism for mitigating urban heating in Morocco. This article was authored by Najla Fathi, Lahouari Bounua, and Mohamed Masouli.