The Metro Vancouver Regional District recently released a chart showing the number of air quality advisories issued per year over the last two decades.
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| Number of days of air quality advisories in the Lower Fraser Valley. Source: Metro Vancouver |
The regional district issued fewer air quality advisories in the first decade than in the second decade. Between 2003 and 2012, there were 36 advisories issued. There were over double that between 2013 and this summer.
The two primary causes are ground-level ozone and fine particulate matter. Fine particulate matter is primarily caused by forest fires, while ground-level ozone occurs as a reaction between higher temperatures and fossil fuel, cannabis production, agricultural activitiy, and other solvent fumes. Both are increasing due to the impacts of climate change.
Metro Vancouver's new Climate 2050 plan calls for reducing volatile organic compounds such as fossil fuels, which should help reduce ground-level ozone.
Please read the Air Quality Advisories During the Summer of 2022 report for more information.
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