Air pollution is one of the most challenging problems facing the international community; it is widespread and growing in importance, and has clear and known impacts on health and the environment. The human need for transport, manufactured goods and services brings with it impacts on the atmospheric environment at scales from local to global. The rate of development of the global economy brings new pressures and the willingness of governments to regulate air pollution is often balanced by concerns over the economic impact of such regulation. Science is the key to identifying the nature and scale of air pollution impacts and is essential in the formulation of policies for regulatory decision-making. The goal of this conference was to bring together researchers who are active in the study of air contaminants and to exchange information through the presentation and discussion of papers dealing with the wide variety of topics listed.Conference topics include the following: Air pollution modelling; Air quality management; Air pollution problems in Thailand; Emission studies; Indoor air pollution; Monitoring and measuring; Air pollution mitigation; Health effects; Innovative technologies; Carbon sequestration.