Here you can compare air quality or health impacts across countries, create global maps of air quality and health impacts, plot their trends over time, and view or download images and tables with air quality and health impact data. Please refer to the How To page and the Glossary for guidance. You can also find background information on how the air quality and health data are developed in Methods and see plans for future updates in What's Next. Tell us about your experience with the site, your analyses with the data, and what you'd like to see. We'd like to hear from you!