In marginal neighborhoods, overcrowding, lack of green areas and lack of adaptation measures condemn residents to spend the day looking for shade. 62% of the urban population in Africa resides in informal settlements, where urban planning and municipal services are often non-existent.

The United Nations estimates that the population living in informal neighborhoods will triple between now and 2050, from 400 million to 1.2 billion people. Researchers seek to create a model with satellite data and their field work to map how air temperature, humidity and radiation unequally affect slums.. The heat that affects health is related to the urban typology, whether there are more or fewer houses and green areas, and their construction material, as well as overcrowding. “We are concerned about climate change because it directly harms us, but there is no data on how it unequally affects the most disadvantaged,” says Ángela Abascal, urban planner and researcher in the Onekana project (which in Swahili means “make visible”)