For objectives currently in effect, see the Alberta Ambient Air Quality Objectives and Guidelines Summary available at:
The following document is a guideline for the implementation of Ambient Air Quality Objectives (AAQO) and their use in air dispersion modelling and ambient air monitoring.
Ambient Air Quality Objectives and Supporting Documents
Proposed Ambient Air Quality Objective
The following document has been posted on May 25, 2018, for a 60-day public review and comment period.
Comments, questions or suggestions regarding the content of this ambient air quality objective can be emailed or forwarded to:
The AAQO documents provide a short description of the substance, the effects and the objective levels. The supporting documents are detailed reports providing scientific and technical information on the substances.
Fine Particulate Matter (PM2.5)
Updated: May 25, 2018