Canada's Air Pollutant Emissions Inventory

The Air Pollutant Emission Inventory (APEI) is an annual report of air pollutant emissions across Canada published by Environment and Climate Change Canada. The report details the release of air pollutants from all known of sources since 1990. The APEI serves many purposes, including:

- supporting the development of and tracking progress on air quality management strategies, policies and regulations

- fulfilling Canada’s domestic and international reporting obligations

- informing Canadians about air pollutants emissions

- providing data to support Canada’s air quality health indices



Emissions data is available for the following:



Criteria air contaminants (CACs):

- Total particulate matter (TPM)

- Particulate matter less than or equal to 10 microns (PM10)

- Particulate matter less than or equal to 2.5 microns (PM2.5)

- Sulphur oxides (SOx)

- Nitrogen oxides (NOx)

- Volatile organic compounds (VOCs)

- Carbon monoxide (CO)

- Ammonia (NH3)



Heavy metals:

- Mercury (Hg)

- Lead (Pb)

- Cadmium (Cd)



Persistent organic pollutants (POPs):

- Dioxins and furans (D/F)

- Four polycyclic aromatic hydrocarbons (PAHs) compounds (Benzo(a)pyrene, Benzo(b)fluoranthene, Benzo(k)fluoranthene and Indeno(1,2,3-cd)pyrene)

- Hexachlorobenzene (HCB)



This data record breaks down the historical trends of reported pollutants by individual substances. To perform more customized selections of APEI data, please visit our website to use our interactive query tool.



The Air Pollutant Emission Inventory is compiled from many different data sources. Emissions data reported by individual facilities to Environment and Climate Change Canada’s National Pollutant Release Inventory are supplemented with well documented, science-based estimation tools to quantify total emissions. Together these data sources provide a comprehensive overview of pollutant emissions across Canada.

Basic view

Metadata Record Information

File Identifier
c8c75180-72e8-4177-8728-a7cab602983a XML
Date Stamp
2026-03-09T15:47:56.003Z
Metadata language

eng; CAN
Character set
UTF8
Hierarchy Level
Series
Author
  Government of Canada; Environment and Climate Change Canada - Environment and Climate Change Canada ( Air Pollutant Emissions Inventory)

351 Saint-Joseph Boulevard, Gatineau, Quebec, K1A 0H3, Canada
https://www.canada.ca/en/environment-climate-change.html
 

Data identification

Title

Canada's Air Pollutant Emissions Inventory
Date (Creation)
2026-03-13
Date (Publication)
2026-03-13
Status
On going
Metadata language

eng; CAN
Metadata language

fra; CAN
Character set
UTF8
Topic category
  • Environment
Maintenance and Update Frequency
As needed
Spatial representation type
Text, table
Point of contact
  Government of Canada; Environment and Climate Change Canada - Lindsay Pratt ( Director)

351 Saint-Joseph Boulevard, Gatineau, Quebec, K1A 0H3, Canada
https://www.canada.ca/en/environment-climate-change/services/pollutants/air-emissions-inventory-overview.html

Keywords

Theme

  • Atmosphere

  • data

  • inventory

  • Canada

  • national

  • provincial

  • territorial

  • summary

  • APEI

  • National Pollutant Release Inventory

  • NPRI

  • total particulate matter, particulate matter

  • PM, TPM, PM10, PM2.5

  • particulate matter less than or equal to 10 microns

  • particulate matter less than or equal to 2.5 microns

  • sulphur oxides

  • sulfur dioxide

  • SO2

  • SOx

  • nitrogen oxides

  • NOx

  • nitrogen dioxides

  • NO2

  • volatile organic compounds

  • VOCs

  • ammonia, NH3

  • carbon monoxide

  • CO

  • heavy metals

  • lead

  • Pb

  • cadmium

  • mercury

  • persistent organic compounds

  • dioxins

  • polychlorinated dibenzo-p-dioxins

  • PCDDs

  • furans

  • polychorinated dibenzofurans

  • PCDFs

  • Polycyclic Aromatic Hydrocarbons

  • PAHs, PAH

  • hexachlorobenzene

  • HCB

  • Criteria Air Contaminants

  • CACs

  • toxic

  • air contaminants

  • air quality, air pollution, air pollutant

  • acid rain

  • smog

  • precursors

  • sector

  • ground level ozone

  • historical emissions

  • air releases

  • area source

  • point source

  • industrial

  • open

  • miscellaneous

  • mobile

  • vehicle

  • transportation

  • non-industrial

  • trends
Temporal

  • 1990

  • 1991

  • 1993

  • 1994

  • 1990

  • 1991

  • 1992

  • 1993

  • 1994

  • 1995

  • 1996

  • 1997

  • 1998

  • 1999

  • 2000

  • 2001

  • 2002

  • 2003

  • 2004

  • 2005

  • 2006

  • 2007

  • 2008

  • 2009

  • 2010

  • 2011

  • 2012

  • 2014

  • 2013

  • 2015

  • 2016

  • 1992

  • 2017

  • 2018

  • 2019

  • 2020

  • 2021

  • 2022

  • 2023

  • 2024
Place

  • New Brunswick

  • NB

  • Nova Scotia

  • NS

  • Prince Edward Island

  • PEI

  • PE

  • Newfoundland and Labrador

  • NL

  • Quebec

  • Ontario

  • ON

  • Manitoba

  • MB

  • Alberta

  • AB

  • British Columbia

  • BC

  • Saskatchewan

  • SK

  • Northwest Territories

  • NT

  • Yukon

  • YN

  • Nunavut

  • NU

  • NWT

ECCC Information Category EN

  • Air - Quality

  • Air

  • Pollution and Waste

Government of Canada Core Subject Thesaurus

  • Annual reports

  • Air

  • Environmental agreements

  • Environment

  • Chemicals

  • Industrial waste

  • Territories

  • Environmental standards

  • Provinces

  • Scientific information

  • Air pollution

  • Air quality

  • Pollutants

  • Pollution

Business Functions

  • Monitor / Assess Substance and Waste Levels in Air, Water, Soil, Biota

  • Assess Toxicity, Manage and Monitor for Environmental Presence of Hazardous Substances and Waste

Geography

  • National (CA)

external.theme.EC_Branch

  • Science and Technology Branch

external.theme.EC_Directorate

  • Science and Risk Assessment

external.theme.EC_Program_PAA

  • 3.2.1.1. Industrial Sector Emissions

external.theme.GC_Security_Level

  • Unclassified
 
Use Limitation

Open Government Licence - Canada ( http://open.canada.ca/en/open-government-licence-canada)

Access Constraints
License
Use Constraints
License
Begin Date
1990-01-01
End Date
2024-12-31

Extent

N
S
E
W
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Ref. system Reference Systems

Reference system identifier
http://www.epsg-registry.org / EPSG:4326 /
 

Distribution

Distribution Formats

Distribution format
  • CSV ( 2010)

 
Distributor
  Government of Canada; Environment and Climate Change Canada - Environment and Climate Change Canada ( Air Pollutant Emissions Inventory)

351 Saint-Joseph Boulevard, Gatineau, Quebec, K1A 0H3, Canada
https://www.canada.ca/en/environment-climate-change.html
 
 

Overviews

thumbnail

Keywords

1990 1990 1991 1991 1992 1992 1993 1993 1994 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 AB APEI Alberta Atmosphere BC British Columbia CACs CO Canada Criteria Air Contaminants HCB MB Manitoba NB NL NO2 NOx NPRI NS NT NU NWT National Pollutant Release Inventory New Brunswick Newfoundland and Labrador Northwest Territories Nova Scotia Nunavut ON Ontario PAHs, PAH PCDDs PCDFs PE PEI PM, TPM, PM10, PM2.5 Pb Polycyclic Aromatic Hydrocarbons Prince Edward Island Quebec SK SO2 SOx Saskatchewan VOCs YN Yukon acid rain air contaminants air quality, air pollution, air pollutant air releases ammonia, NH3 area source cadmium carbon monoxide data dioxins furans ground level ozone heavy metals hexachlorobenzene historical emissions industrial inventory lead mercury miscellaneous mobile national nitrogen dioxides nitrogen oxides non-industrial open particulate matter less than or equal to 10 microns particulate matter less than or equal to 2.5 microns persistent organic compounds point source polychlorinated dibenzo-p-dioxins polychorinated dibenzofurans precursors provincial sector smog sulfur dioxide sulphur oxides summary territorial total particulate matter, particulate matter toxic transportation trends vehicle volatile organic compounds
Business Functions

Assess Toxicity, Manage and Monitor for Environmental Presence of Hazardous Substances and Waste Monitor / Assess Substance and Waste Levels in Air, Water, Soil, Biota
ECCC Information Category EN

Air Air - Quality Pollution and Waste
Government of Canada Core Subject Thesaurus

Air Air pollution Air quality Annual reports Chemicals Environment Environmental agreements Environmental standards Industrial waste Pollutants Pollution Provinces Scientific information Territories
external.theme.EC_Branch

Science and Technology Branch
external.theme.EC_Directorate

Science and Risk Assessment
external.theme.EC_Program_PAA

3.2.1.1. Industrial Sector Emissions
external.theme.GC_Security_Level

Unclassified


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