The United States had the highest nitrogen oxides (NOx) emissions among OECD countries in 2022, at **** million metric tons. Australia followed that year, with NOx emissions totaling *** million metric tons.Â
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OWID. (February 12, 2025). Nitrogen oxides (NOx) emissions worldwide in 2022, by select country (in 1,000 metric tons) [Graph]. In ÀÖ²¥´«Ã½app×îа汾. Retrieved August 13, 2026, from /statistics/478831/leading-countries-based-on-nitrogen-oxide-emissions/
OWID. "Nitrogen oxides (NOx) emissions worldwide in 2022, by select country (in 1,000 metric tons)." Chart. February 12, 2025. ÀÖ²¥´«Ã½app×îа汾. Accessed August 13, 2026. /statistics/478831/leading-countries-based-on-nitrogen-oxide-emissions/
OWID. (2025). Nitrogen oxides (NOx) emissions worldwide in 2022, by select country (in 1,000 metric tons). ÀÖ²¥´«Ã½app×îа汾. ÀÖ²¥´«Ã½app×îа汾 Inc.. Accessed: August 13, 2026. /statistics/478831/leading-countries-based-on-nitrogen-oxide-emissions/
OWID. "Nitrogen Oxides (Nox) Emissions Worldwide in 2022, by Select Country (in 1,000 Metric Tons)." ÀÖ²¥´«Ã½app×îа汾, ÀÖ²¥´«Ã½app×îа汾 Inc., 12 Feb 2025, /statistics/478831/leading-countries-based-on-nitrogen-oxide-emissions/
OWID, Nitrogen oxides (NOx) emissions worldwide in 2022, by select country (in 1,000 metric tons) ÀÖ²¥´«Ã½app×îа汾, /statistics/478831/leading-countries-based-on-nitrogen-oxide-emissions/ (last visited August 13, 2026)
Nitrogen oxides (NOx) emissions worldwide in 2022, by select country (in 1,000 metric tons) [Graph], OWID, February 12, 2025. [Online]. Available: /statistics/478831/leading-countries-based-on-nitrogen-oxide-emissions/
