Air Pollutant Emissions Inventory: overview

Canada’s Air Pollutant Emission Inventory (APEI) is a comprehensive inventory of air pollutants at the national, provincial and territorial level. The APEI compiles emissions of 17 air pollutants contributing to smog, acid rain and poor air quality since 1990.

• Air Pollutant Emission Inventory Reports: learn about Canadian air pollutant emissions and trends.
  • Canada’s Air Pollutant Emissions Inventory Report 2023
• Air Pollutant Emission Inventory Data: access emission data of key air pollutants.
  • APEI Inventory Data (Open Data)
  • APEI Online Data Search

Related products

• The Black Carbon Emissions Inventory: tracks levels and trends of black carbon emissions in Canada.
• Canadian Environmental Sustainability Indicators: This indicator, which tracks the progress of the Federal Sustainable Development Strategy, reflects the latest air pollutant emissions information.
• National Pollutant Release Inventory: The National Pollutant Release Inventory (NPRI) is a legally mandated, publically accessible inventory of facility-level pollutant release. NPRI data is used along with estimation tools and methodologies to develop the APEI.
• Canada also prepares emissions projections.