This new edition of a bestseller provides a comprehensive overview of air quality issues, including a better understanding of atmospheric chemistry, the effects of pollution on public health and the environment, and the technology and regulatory practices used to achieve air quality goals. New sections cover toxicological principles and risk assessment. The book contains revised discussions on public policy concerns, with a focus on air quality standards for ozone depletion and global warming, and the health effects of particulate air pollutants. It serves as a text for advanced undergraduate and early graduate study in environmental science, environmental management, industrial hygiene, and pollution control.