Air Quality Index - Poor and Very Poor Hours, Alberta

This Alberta Official Statistic summarizes annual results of calculations of air quality index values as calculated by quality-assured and quality-controlled hourly ambient air quality data. It reports the number of hours of Poor and Very Poor air quality. It also includes an overview of the index, the substances that are used in its calculation, and the causes of poor air quality both in a general sense, and with specific reference to actual events in the years presented.