The city of Marseille has launched a study on the impact of air quality on health. To involve citizens in this process, it sought the assistance of the National Commission for Public Debate, whose recommendations were published in May 2024. Workshops with stakeholders, including representatives from community organizations, provided an opportunity to develop scenarios for improving air quality. The city of Marseille intends to draw on residents’ knowledge of their neighborhoods to implement public policies tailored to the needs and expectations of its population.