Air pollution and ozone (O3) research focuses on this secondary pollutant that forms through complex atmospheric chemistry and poses significant health risks, particularly during warm weather. Studies demonstrate that ground-level ozone exposure contributes to respiratory disease, cardiovascular problems, and premature mortality, with effects that can persist long after exposure ends. The evidence reveals how ozone pollution disproportionately affects outdoor workers, children, and people with existing health conditions. Discover the research documenting ozone health impacts and why this pollutant requires comprehensive regional control strategies.