Executive summary The study examines the manifestations of the climate crisis in Bucharest, the forecasts regarding how temperatures will evolve over the coming decades, and the way in which the built environment and the city’s green and blue infrastructure influence the effects of the climate crisis. It also provides an analysis of the administrative and political response of Bucharest’s local public administration to the impact of the climate crisis, by reviewing some of the existing strategic documents at the local level. The study also describes the everyday experience of heatwave days for several vulnerable groups(people who experience homelessness, people engaged in precarious work). In drawing up the report, we relied on research tools such as document analysis, interviews, and ethnographic observation. The report shows that despite tremendous potential in Bucharest for public policies centred around mitigating the effects of the climate crisis(due to the lake infrastructure of the city, non-governmental organisations and citizen groups, bigger financial resources than in other local communities), the municipality has not made optimal use of the existing resources and has postponed taking measures that would improve thermal comfort in public spaces. Administrative and political debates completely overlook public policies focused on a just transition, and vulnerable people living in the city need to resort to individual solutions for vital things such as access to water. Bucharest Under Heatwave 3