The Global Burden of Disease Study 2021 (GBD 2021), coordinated by the Institute for Health Metrics and Evaluation (IHME), estimated the burden of diseases, injuries, and risk factors for 204 countries and territories and selected subnational locations.

This dataset provides air pollution exposure estimates for nitrogen dioxide pollution, ozone pollution, ambient particulate matter pollution, and household air pollution. Population-weighted exposure summary files are provided for all air pollution risk factors, and gridded exposure files are provided for nitrogen dioxide, ozone, and ambient particulate matter pollution. Also provided are estimates for relative risks due to exposure to particulate matter for ischemic heart disease, stroke, chronic obstructive pulmonary disease, lung cancer, acute lower respiratory infection, type 2 diabetes mellitus, as well as gestational age shifts.