Air and Climate Indicators

Air Quality

• Ambient Levels of Air Pollutants (updated June 2012)
• Fine particulate matter (PM_2.5)
• Ground-level ozone (O₃)
• Sulphur dioxide (SO₂)
• Nitrogen dioxide (NO₂)
• Volatile organic compounds (VOC)
• International Comparison: Urban Air Quality (updated June 2012)

Emissions to Air

Air Pollutants

• National Air Pollutant Emissions (updated June 2012)
• Sulphur oxides (SO_x)  
• Nitrogen oxides (NO_x)
• Volatile organic compounds (VOC)
• Ammonia (NH₃)
• Carbon monoxide (CO) 
• Particulate matter (TPM, PM₁₀, and PM_2.5) 
• International Comparison: Air Pollutant Emissions (updated November 2011)

Toxic Substances (updated July 2012)

• Emission of Toxic Substances to Air
• Mercury emissions to air
• Emissions of hexavalent chromium and its compounds to air

Greenhouse Gases

• National Greenhouse Gas Emissions (updated April 2012)
• Greenhouse Gas Emissions per Person and per Unit Gross Domestic Product 
• Greenhouse Gas Emissions by Economic Sector
• Greenhouse Gas Emissions by Province and Territory
• Greenhouse Gas Emissions from Large Facilities
• Global Carbon Dioxide Emissions from Fuel Combustion (updated April 2012)
• Progress Toward Canada's Greenhouse Gas Emissions Reduction Target (updated August 2012)

Weather

• Weather Warning Index (updated June 2012)

Human Health Impacts Related to Pollution

• Air Health Indicator (updated July 2011)
• Level of Exposure to Substances of Concern (updated July 2012)