Population exposure to outdoor air pollutants – English (English, HTML)

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Publisher-reported update

2026-03-30

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Population exposure to outdoor air pollutants indicator tracks the percentage of the population living in Canadian regions where concentrations of outdoor air pollutants from all sources were less than or equal to the 2020 Canadian Ambient Air Quality Standards. Canadians are exposed to air pollutants on a daily basis, and this exposure is associated with acute and chronic adverse health effects. Exposure to some air pollutants, even at low levels, has been linked to increased heart and respiratory problems, leading to more hospitalizations, emergency room visits, and premature deaths. 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

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