Nairobi’s informal settlements are on the front lines of a worsening climate crisis, as extreme rains transform localized floods into a national economic threat. With over half of Nairobi’s population residing in tightly packed homes along flood-prone rivers or low-lying areas—locations once deemed ‘cheap’ but now deadly traps—the city is experiencing a profound shift. The increased unpredictability and intensity of rainfall, a direct consequence of climate change, means families in Mathare, Kibera, and Kawangware frequently wake to…