Air quality

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air quality indicators track ambient concentrations of fine particulate matter, ground-level ozone, sulphur dioxide, nitrogen dioxide, and volatile organic compounds at the national and regional levels as well as at local monitoring stations. The national and regional indicators are presented with their corresponding Canadian Ambient Air Quality Standard when available. Canadians are exposed to air pollutants on a daily basis, and this exposure can cause adverse health and environmental effects. Information is provided to Canadians in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators Files (slice {"file": url}): - Relative air pollutant concentration changes, Canada, 2009 to 2023 – English (CSV; 2.26 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/EN/1-national-indexed-2026-en.csv - Relative air pollutant concentration changes, Canada, 2009 to 2023 – French (CSV; 2.56 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/fr/1-national-indexe-2026-fr.csv - National average fine particulate matter concentrations, Canada, 2009 to 2023 – English (CSV; 1.44 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/EN/2-pm25-average-national-2026-en.csv - National average fine particulate matter concentrations, Canada, 2009 to 2023 – French (CSV; 1.61 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/fr/2-pm25-moyenne-national-2026-fr.csv - Regional annual average fine particulate matter concentrations, Canada, 2009 to 2023 – English (CSV; 3.76 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/EN/3-pm25-average-regional-2026-en.csv - Regional average fine particulate matter concentrations, Canada, 2009 to 2023 – French (CSV; 3.98 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/fr/3-pm25-moyenne-regional-2026-fr.csv - National average peak fine particulate matter concentrations, Canada, 2009 to 2023 – English (CSV; 1.49 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/EN/4-pm25-peak-national-2026-en.csv - National average peak fine particulate matter concentrations, Canada, 2009 to 2023 – French (CSV; 1.69 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/fr/4-pm25-pointe-national-2026-fr.csv - Regional average peak fine particulate matter concentrations, Canada, 2009 to 2023 – English (CSV; 4.17 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/EN/5-pm25-peak-regional-2026-en.csv - Regional average peak fine particulate matter concentrations, Canada, 2009 to 2023 – French (CSV; 4.48 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/fr/5-pm25-pointe-regional-2026-fr.csv - National average ozone concentrations, Canada, 2009 to 2023 – English (CSV; 1.51 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/EN/6-ozone-average-national-2026-en.csv - National average ozone concentrations, Canada, 2009 to 2023 – French (CSV; 1.74 kB) (csv): https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/air-quality/2026/fr/6-ozone-moyenne-national-2026-fr.csv - and 28 more in the distributions

Cite as: Environment and Climate Change Canada | Environnement et Changement climatique Canada. Air quality. https://open.canada.ca/data/en/dataset/01313060-f926-4460-a537-4204e47c88a5