Ambient Air Quality Criteria

Access the List of Ambient Air Quality Criteria (AAQC) set by the Ministry of the Environment, Conservation and Parks.

An AAQC is not a regulatory value. It is a concentration of a contaminant in air that is protective against adverse effects on health and/or the environment. AAQCs are used to assess general (ambient) air quality resulting from all sources of a contaminant to air. AAQCs are most commonly used in environmental assessments, special studies using ambient air monitoring data, assessment of general air quality in a community and annual reporting on air quality across the province.

Additional information

Last Validated Date
September 21, 2023
Update frequency
As required

Ambient Air Quality Criteria

Learn more about accessing data using different formats.

No date range

  • CSV
    List of Ambient Air Quality Criteria (AAQCs) English [53.4 KiB]

    Last Updated: September 21, 2023


Report an issue with this data

Submit a report if you are experiencing issues with the data resources in this dataset.

Help us improve the Data Catalogue