Air pollution issues remain among the most challenging problems facing the international scientific community, with sources, pollutants and solutions continuously evolving. The knowledge derived from well-designed investigations needs to be aligned with further technical and economic studies in order to ensure cost-effective and efficient mitigation of air pollution adverse effects. In turn, the science, technology and economic outcomes are necessary but not sufficient. Research needs to be contextualised within well-formulated communication strategies that help policymakers, industry and citizens to understand and appreciate the risks and rewards arising from air pollution management. Of equal importance is the need to embed non-academics in the design, development and delivery of air pollution research to ensure outcomes are as impactful and meaningful as possible. Papers in this volume bring together contributions from scientists from around the world to present recent work addressing air pollution issues mentioned above. The book covers areas such as pollutants, air pollution sources, forecasts, assessment, effects, polices and inter-disciplinarities.