Nitrogen oxides emissions in Canada 2022, by source
Transportation and mobile equipment in Canada emitted some 540 thousand metric tons of nitrogen oxides (NOx) in 2022. The largest source of transportation-related NOx emissions that year were off-road diesel vehicles and equipment. The oil and gas industry was the second-largest NOx emitter in the North American country, having released 440 thousand metric tons. In total, approximately 1.3 million metric tons of NOx were released in Canada in 2022.