"Changes in emissions of key air pollutants from transportation, off-road vehicles and mobile equipment, Canada, 1990 to 2024",,,,,,,, ,,,,,,,, Year,Nitrogen oxides (percentage change from 1990 level),Nitrogen oxides (emissions in kilotonnes),Carbon monoxide (percentage change from 1990 level),Carbon monoxide (emissions in kilotonnes),Black carbon (percentage change from 1990 level),Black carbon (emissions in kilotonnes),Volatile organic compounds (percentage change from 1990 level),Volatile organic compounds (emissions in kilotonnes) 1990,0,1261,0,9586,n/a,n/a,0,634 1991,-3,1227,-5,9139,n/a,n/a,-2,622 1992,0,1263,-5,9153,n/a,n/a,1,642 1993,6,1335,-5,9086,n/a,n/a,5,667 1994,15,1451,-4,9200,n/a,n/a,11,706 1995,19,1500,-2,9414,n/a,n/a,20,759 1996,22,1543,-3,9302,n/a,n/a,25,790 1997,26,1592,-4,9192,n/a,n/a,28,813 1998,26,1588,-5,9097,n/a,n/a,31,833 1999,25,1574,-7,8912,n/a,n/a,33,842 2000,23,1554,-9,8758,n/a,n/a,29,819 2001,16,1469,-11,8556,n/a,n/a,27,804 2002,12,1407,-12,8392,n/a,n/a,24,786 2003,8,1356,-19,7807,n/a,n/a,17,745 2004,3,1304,-24,7302,n/a,n/a,12,713 2005,-1,1250,-31,6641,n/a,n/a,4,662 2006,-7,1172,-36,6117,n/a,n/a,-3,612 2007,-10,1130,-45,5241,n/a,n/a,-12,561 2008,-15,1069,-50,4790,n/a,n/a,-20,509 2009,-22,979,-52,4564,n/a,n/a,-25,474 2010,-22,978,-50,4748,n/a,n/a,-26,468 2011,-29,896,-57,4163,n/a,n/a,-35,410 2012,-34,832,-60,3857,n/a,n/a,-41,375 2013,-37,798,-61,3730,0,24,-45,352 2014,-41,747,-65,3364,-10,22,-51,311 2015,-44,702,-67,3176,-25,21,-54,290 2016,-49,639,-67,3205,-38,19,-56,279 2017,-50,633,-68,3092,-43,19,-59,262 2018,-50,628,-68,3024,-43,19,-61,249 2019,-53,596,-69,2965,-47,17,-63,237 2020,-59,511,-73,2607,-54,15,-68,204 2021,-62,484,-72,2693,-55,14,-68,201 2022,-62,478,-73,2612,-57,13,-70,193 2023,-63,470,-72,2650,-57,13,-70,192 2024,-63,463,-73,2615,-57,12,-71,183 ,,,,,,,, "Note: n/a = not available. Fine particulate matter, sulphur oxides and ammonia are not shown in the table due to their low share (≤ 5%) of total emissions in 2024. Black carbon emissions reporting did not begin until 2013, marking the fist year of the Black Carbon Emissions Inventory.",,,,,,,, Source : Environment and Climate Change Canada (2026) Air Pollutant Emission Inventory (https://www.canada.ca/en/environment-climate-change/services/pollutants/air-emissions-inventory-overview.html) and Black Carbon Emissions Inventory (https://www.canada.ca/en/environment-climate-change/services/pollutants/black-carbon-emissions-inventory.html).,,,,,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,,,,,