Around the world, levels of ambient fine particulate matter continue to exceed the WHO Air Quality Guideline. How does your air measure up?
Figure A. Population-weighted annual average PM2.5 concentrations in 2019. Drag or zoom to explore the data.
Three Decades of Air Pollution
With data going back to 1990, we analyze exposure to three types of air pollution — outdoor fine particulate matter (PM2.5), ozone, and household air pollution (HAP).
