Senegalese cities have experienced rapid urbanisation, leading to profound landscape changes. Dakar, one of the cities with the fastest urban expansion, has seen major negative impacts on the availability and quality of its green spaces. This study examines the spatio-temporal evolution of Dakar’s green spaces over recent decades. Using satellite imagery, this study produces land use maps to quantify green space coverage. The results show a gradual decline in green spaces in Dakar between 1990 and 2022. 1990 green spaces covered an estimated 13.36 % of Dakar’s area, which decreased significantly to 9.54 % by 2022. Meanwhile, other land uses, such as built-up areas, increased significantly during this period, from 19.23 % in 1990 to 39.34 % in 2022. This pattern highlights the growing challenge of green space availability as built-up areas expand rapidly, particularly when growth is unplanned. This study underscores the importance of sustainable urban planning that integrates the protection and conservation of Dakar’s vegetation to preserve vital ecosystem services.