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Wildfires are thought to be increasing in severity and frequency as a result of climate change1–5. Air pollution from landscape fires can negatively affect human health4–6, but human exposure to landscape fire-sourced (LFS) air pollution has not been well characterized at the global scale7–23. Here, we estimate global daily LFS outdoor fine particulate matter (PM2.5) and surface ozone concentrations at 0.25° × 0.25° resolution during the period 2000–2019 with the help of machine learning and chemical transport models. We found that overall population-weighted average LFS PM2.5 and ozone concentrations were 2.5 µg m−3 (6.1% of all-source PM2.5) and 3.2 µg m−3 (3.6% of all-source ozone), respectively, in 2010–2019, with a slight increase for PM2.5, but not for ozone, compared with 2000–2009. Central Africa, Southeast Asia, South America and Siberia experienced the highest ....

National Bureau Of Economic Research , United States , South Australia , Landscape Fires Global Fire Monitoring Center , Carbon Monoxide World Health Organization , A Guide For Public Health Officials , Data Files Us Environmental Protection Agency , Wildfires National Geographic Society , National Air Pollution Monitor Database , European Environment Agency , Health Centre For Air Pollution Energy , Us Environmental Protection Agency , R Package Fenmlm Department Of Economics , World Bank Country , Lending Groups World Bank , Health Perspect , Human Development Data United Nations Programme , Health Research , Atmospheric Administration , United Nations , Volcanic Activity Wildfires Centre For Research , European Centre For Medium , Smoke Product National Oceanic , Earth Env , Changing Risk , National Bureau ,