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Progress report on the achievement of the Canadian Ambient Air Quality Standards for particulate matter and ozone

2014 Report

This is the first annual report on the Canadian Ambient Air Quality Standards (CAAQS) for ozone and particulate matter measured in ambient air in Québec between 2011 and 2013. The Canada-wide standards were used in the past, but they have been replaced by the CAAQS.

The calculations featured in this report are based on data from 46 air quality measurement sites, which are located in all three Air zones in Québec: South, North, and East.

Between 2011 and 2013, 93% of all sites achieved the daily CAAQS target value for PM2,5, while 80% of all sites met the annual target value for PM2.5. These stations are mostly located in urban areas with high population densities or nearby such urban areas. Exceedances are usually about 1 µg/m³ higher than the target values.

95% of sites achieve the ozone CAAQS target value. One of the two stations that does not meet the target value is Saint-Anicet, which is directly under the influence of emissions sources outside of Québec.

The South Air Zone is definitely the most impacted one, which makes sense considering that it hosts most of Quebec’s economy and population (90%). Moreover, it is also under the influence of emissions sources outside of the province. In fact, the only CAAQS target value exceedances are at sites located in this particular Air Zone. The North Air Zone has good air quality, while de East Air Zone benefits from excellent air quality.

Quebec already has developed its own air quality management tools to ensure clean air, which include regulation and awareness-raising tools.

Report 2014 (French PDF file, 1.45 MB)

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