2025 EACNCA | Tokyo: Advancing VOCs reduction through a “best mix” approach, balancing direct regulation, voluntary efforts, and public participation
Tokyo has long been a global leader in urban air quality management, achieving national standards through decades of stringent regulation and technological advancement. Building on this foundation, the city now promotes a “best mix” approach through initiatives such as the “Clear Sky Project”, which combines regulation, voluntary action, and public participation. Through sustained efforts, Tokyo reduced VOCs emissions by 63% between 2000 and 2020, while engaging over 300 organizations as Clear Sky Supporters by 2025. The city continues to address remaining challenges such as photochemical oxidants by expanding collaboration with citizen and business engagement.