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.

Overall, Canadian emissions of 14 air pollutants (sulphur oxides, nitrogen oxides, cadmium, lead, mercury, fine particular matter, dioxins and furans, four types of polycyclic aromatic hydrocarbons, volatile organic compounds, carbon monoxide and hexachlorobenzene) have declined steadily since 1990, and emissions of three air pollutants (ammonia, total particulate matter and coarse particulate matter) have increased. See APEI Inventory Data (Open Data).

Learn more about Canada's air pollutant emissions:

APEI Online Data Search

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multiple pollutant sources


Data available on this website are current as of November 4, 2016. Ongoing improvements or future corrections may result in updates.

As part of the quality control process, we conduct a number of data checks to ensure the data is of the highest possible quality.

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