The smoke has moved over Greenland and Iceland since June 1, and observations in southern Norway have recorded increasing concentrations of aerosolized particles.
Officials with the Ministry of Natural Resources and Forestry are closely monitoring a growing number of active fires in the province’s north, particularly the northeast.
Air quality alerts are triggered by a number of factors, including the detection of fine-particle pollution known as “PM 2.5” which can irritate the lungs.
In a note to parents and guardians, the HWDSB said it will limit outdoor activities Wednesday to shield students from poor air quality resulting from Quebec and Ontario wildfires.
Since early May, more than 100,000 Canadians have been forced to flee their homes in nine provinces and territories due to forest fires, federal officials said Monday.