The Canadian Environmental Sustainability Indicators CESI program provides data and information to track Canada's performance on key environmental sustainability issues. The Air Pollutant Emissions indicators track the total emissions of key air pollutants from anthropogenic human-related sources. These air pollutants are sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide, total particulate matter, respirable particulate matter and fine particulate matter. For each air pollutant, the indicators are provided at the national level. They also identify the major sources of emissions and provide links to the detailed information on air pollutant emissions from facilities. 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 supplementary documentation for data sources and details on how those data were collected and how the indicator was calculated.