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The Canadian Ambient Air Quality Standards (CAAQS, the standards) are health and environmental-based outdoor air quality objectives for pollutant concentrations in the air. The standards are intended to protect human health and the environment and to drive continuous improvement in air quality across Canada.

To improve air quality using early and ongoing actions for continuous improvement. To improve air quality through active air management and prevent exceedance of the CAAQS. To reduce pollutant levels below the CAAQS through advanced air management actions.

NAAQS are currently set for carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide. for six common air pollutants (also known as " criteria air pollutants.

How does the AQI work? Daily AQI ColorLevels of ConcernValues of IndexGreenGood0 to 50YellowModerate51 to 100OrangeUnhealthy for Sensitive Groups101 to 150RedUnhealthy151 to 2002 more rows

Air quality management refers to all the activities a regulatory authority undertakes to help protect human health and the environment from the harmful effects of air pollution. The process of managing air quality can be illustrated as a cycle of inter-related elements.

The criteria air pollutants include particle pollution, ground-level ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide, and lead. These pollutants can harm your health and the environment, and cause property damage.

Nitrogen Dioxide (NO2) Sulphur Dioxide (SO2) Carbon Monoxide (CO) Ozone (O3)