Qatar had the highest population-weighted concentration of ambient ozone pollution worldwide in 2020, at **** part per billion (ppb). Nepal and India followed closely, with ozone concentrations slightly above ** ppb. Countries with the highest concentrations of ozone pollution were typically located in the Middle East and South Asia.
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Health Effects Institute, & IHME. (July 11, 2024). Ambient ozone pollution based on population-weighted ozone worldwide in 2020, by select country (in parts per billion) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 19, 2026, from /statistics/830856/ambient-ozone-pollution-based-on-population-weighted-ozone-by-major-countries/
Health Effects Institute, und IHME. "Ambient ozone pollution based on population-weighted ozone worldwide in 2020, by select country (in parts per billion)." Chart. July 11, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 19, 2026. /statistics/830856/ambient-ozone-pollution-based-on-population-weighted-ozone-by-major-countries/
Health Effects Institute, IHME. (2024). Ambient ozone pollution based on population-weighted ozone worldwide in 2020, by select country (in parts per billion). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 19, 2026. /statistics/830856/ambient-ozone-pollution-based-on-population-weighted-ozone-by-major-countries/
Health Effects Institute, and IHME. "Ambient Ozone Pollution Based on Population-weighted Ozone Worldwide in 2020, by Select Country (in Parts per Billion)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 11 Jul 2024, /statistics/830856/ambient-ozone-pollution-based-on-population-weighted-ozone-by-major-countries/
Health Effects Institute & IHME, Ambient ozone pollution based on population-weighted ozone worldwide in 2020, by select country (in parts per billion) ÌÇÐÄÆƽâ°æ, /statistics/830856/ambient-ozone-pollution-based-on-population-weighted-ozone-by-major-countries/ (last visited July 19, 2026)
Ambient ozone pollution based on population-weighted ozone worldwide in 2020, by select country (in parts per billion) [Graph], Health Effects Institute, & IHME, July 11, 2024. [Online]. Available: /statistics/830856/ambient-ozone-pollution-based-on-population-weighted-ozone-by-major-countries/
