The United Nations Environment Programme (UNEP) and the Climate and Clean Air Coalition (CCAC) convened experts, government representatives, development and civil society organizations, private sector and other key stakeholders from the Asia Pacific region and beyond at the Climate and Clean Air Conference 2023: Air quality action week on 29 May to 2 June in Bangkok, Thailand. This Event Report provides highlights of plenary and breakout sessions organized by UNEP under the ‘Air quality action week’ banner. Additional resources, including links to session recordings and news articles, have been included for further reference.