Adapted from Statistics Canada, Canadian Environmental Sustainability Indicators - Air Pollutant Emissions. This does not constitute an endorsement by Statistics Canada of this product.
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Nitrogen oxides emissions in Canada 1990-2022, by province
Alberta produced the largest amount of nitrogen oxides (NOx) emissions in Canada in 2022, at *** thousand metric tons. While Ontario was the second-largest NOx producer in the North American country that year, emissions in the province have fallen by roughly ** percent since 1990.
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Environment and Climate Change Canada. (July 3, 2024). Nitrogen oxides (NOx) emissions in Canada in 1990 and 2022, by province (in 1,000 metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/583251/nitrogen-oxide-emissions-by-province-canada/
Environment and Climate Change Canada. "Nitrogen oxides (NOx) emissions in Canada in 1990 and 2022, by province (in 1,000 metric tons)." Chart. July 3, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/583251/nitrogen-oxide-emissions-by-province-canada/
Environment and Climate Change Canada. (2024). Nitrogen oxides (NOx) emissions in Canada in 1990 and 2022, by province (in 1,000 metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/583251/nitrogen-oxide-emissions-by-province-canada/
Environment and Climate Change Canada. "Nitrogen Oxides (Nox) Emissions in Canada in 1990 and 2022, by Province (in 1,000 Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 3 Jul 2024, /statistics/583251/nitrogen-oxide-emissions-by-province-canada/
Environment and Climate Change Canada, Nitrogen oxides (NOx) emissions in Canada in 1990 and 2022, by province (in 1,000 metric tons) ÌÇÐÄÆƽâ°æ, /statistics/583251/nitrogen-oxide-emissions-by-province-canada/ (last visited July 21, 2026)
Nitrogen oxides (NOx) emissions in Canada in 1990 and 2022, by province (in 1,000 metric tons) [Graph], Environment and Climate Change Canada, July 3, 2024. [Online]. Available: /statistics/583251/nitrogen-oxide-emissions-by-province-canada/
