"Contribution of the oil and gas industry to total air pollutant emissions by activity type, Canada, 2024",,,,,,,,,,,,, ,,,,,,,,,,,,, Activity type,Sulphur oxides (percentage of national emissions),Sulphur oxides (emissions in kilotonnes),Volatile organic compounds (percentage of national emissions),Volatile organic compounds (emissions in kilotonnes),Nitrogen oxides (percentage of national emissions),Nitrogen oxides (emissions in kilotonnes),Carbon monoxide (percentage of national emissions),Carbon monoxide (emissions in kilotonnes),Fine particulate matter (percentage of national emissions),Fine particulate matter (emissions in kilotonnes),Ammonia (percentage of national emissions),Ammonia (emissions in kilotonnes), Upstream oil and gas,35.8,195.0,38.5,522.5,35.7,430.6,14.8,2.7,11.6,509.7,1.0,11.8, Downstream oil and gas,6.7,36.5,1.7,23.8,1.3,16.1,<0.1,<0.1,0.5,20.3,<0.1,1.5, ,,,,,,,,,,,,, "Note: In the oil and gas industry, upstream activities include exploration, drilling, production and field processing and downstream activities include refining, storage and distribution.",,,,,,,,,,,,, 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).,,,,,,,,,,,,,