Clean Air Day is observed in Canada every first Wednesday of June, having been established in 1999 during Canadian Environment Week. This day aims to highlight the environmental and health impacts of air pollution and encourages actions to reduce it. Activities organized by various stakeholders, including organizations, schools, and municipalities, often include walking and cycling events, art contests, and interactive workshops. Participants are encouraged to take concrete steps towards cleaner air, such as reducing electricity use, supporting renewable energy, and planting trees. Additionally, Clean Air Day promotes the use of the Air Quality Health Index (AQHI), which provides real-time information about air quality across Canada. Despite having some of the best air quality globally, Canada faces significant air pollution challenges, contributing to health issues and economic costs.