Ozone-related acute excess mortality projected to increase in the absence of climate and air quality controls consistent with the Paris Agreement

Ground-level ozone—a product of reactions between other atmospheric pollutants—can trigger coughing and shortness of breath, worsen asthma, and cause damage to airways. Short-term exposure to ground-level ozone can lead to respiratory and cardiovascular disease and has been linked to higher rates of premature death. Climate change and changes in the atmospheric concentrations of ozone precursor pollutants are projected to increase ground-level ozone in many parts of the world.

February 2024

Short-Term Association between Sulfur Dioxide and Mortality: A Multicountry Analysis in 399 Cities

Background: Epidemiological evidence on the health risks of sulfur dioxide (SO2) is more limited compared with other pollutants, and doubts remain on several aspects, such as the form of the exposure-response relationship, the potential role of co-pollutants, as well as the actual risk at low concentrations and possible temporal variation in risks.

March 2023