Air quality and air pollution

Health effects, research and data, air pollutants, emissions inventories, sustainability indicators.

Services and information

Air Quality Health Index

Local conditions, determine risk, improve air quality, calculate the index, videos and publications.


Smog warnings, Air Quality Index (Québec only), smog region map.

Indoor air quality and your health

Air contaminants, health effects of poor indoor air quality, testing for indoor air quality.

Air quality science and research

Air pollutants, acid rain, ozone, smog, particulate matter, mercury, measurement methods, data sets.

Monitoring networks and results

Urban, rural and specialized data, data analysis and archiving.

Air pollution

Criteria air contaminants, persistent organic pollutants, heavy metals, toxics, acid rain, smog, ozone.

Air quality sustainability indicators

Outdoor concentrations of particulate matter, ozone, sulphur dioxide, nitrogen dioxide, VOCs.

Air Pollutant Emission Inventory

Annual report, online data query tool, trends, air quality health data.

Black Carbon Emission Inventory

Annual report, fine particulate matter, wood burning, on-road emissions, polar warming.

Canada’s international agreements

Compendium of Canada’s engagement in international agreements on air quality.

What we are doing

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