"Distribution of air pollutant emissions by source, Canada, 2024",,,,,,,,, ,,,,,,,,, Source,Sulphur oxides (percentage of national emissions),Nitrogen oxides (percentage of national emissions),Volatile organic compounds (percentage of national emissions),Ammonia (percentage of national emissions),Carbon monoxide (percentage of national emissions),Fine particulate matter (percentage of national emissions),,, Oil and gas industry,42.5,37.1,40.2,0.5,12.1,1.2,,, Manufacturing,6.4,5.5,8.6,2.2,2.6,1.4,,, Ore and mineral industries,30.0,7.0,0.9,0.3,11.4,2.7,,, "Transportation (road, rail, air and marine)",0.5,25.0,4.9,1.3,23.1,0.7,,, Off-road vehicles and mobile equipment,<0.1,13.4,8.5,<0.1,36.4,1.2,,, Building heating and energy generation,0.3,4.7,0.2,<0.1,0.7,0.4,,, Electric utilities,19.9,6.7,0.1,<0.1,0.7,0.1,,, Home firewood burning,<0.1,0.3,4.4,0.1,11.3,4.3,,, Incineration and waste,0.4,0.3,0.8,1.4,0.2,<0.1,,, Paints and solvents,n/a,<0.1,19.0,n/a,<0.1,<0.1,,, "Agriculture (livestock, crop production and fertilizer)",<0.1,0.2,8.3,93.7,<0.1,30.5,,, Dust and fires,<0.1,<0.1,0.3,<0.1,1.3,56.0,,, Miscellaneous,<0.1,<0.1,3.7,0.1,0.2,1.4,,, ,,,,,,,,, "Note: n/a = not available. The indicator reports emissions of 6 key air pollutants from human activities only. It does not include emissions from natural sources such as forest fires and from vegetation. Emissions from black carbon, a component of PM2.5, are also not included. The percentages have been rounded off and their sum may not add up to 100.",,,,,,,,, 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).,,,,,,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,,