June 7, 2023
3 mins read

Canada wildfires smoke darkens US skies

As wildfires raged in western Quebec and northern Ontario near Ottawa, the air quality of the Canadian capital city was so bad that it cracked through the top of a risk scale….reports Asian Lite News

Smoke from Canada’s wildfires has engulfed a wide swath of the northern US, triggering air alerts from Minnesota to Massachusetts.

In Ontario, a layer of haze blanketed parts of Ottawa and Toronto, where Canadian officials warned residents about the poor air quality, as smoke floated over portions of New York State and Vermont. All of New York City was under an air quality alert on Tuesday because of the smoke; by the afternoon, the Manhattan skyline was obscured by hazy skies.

More than 400 active wildfires were burning in Canada on Tuesday, according to the Canadian Interagency Forest Fire Centre, exacerbating an already active wildfire season that is only expected to worsen. More than 200 of the fires were burning out of control, the agency said.

In eastern Canada, Quebec was most affected by wildfires as of early Tuesday afternoon, with more than 150 active blazes across the area, according to the fire agency. Residents in some areas were being encouraged to shut their windows and doors, local officials in Quebec said.

As wildfires raged in western Quebec and northern Ontario near Ottawa, the air quality of the Canadian capital city was so bad that it cracked through the top of a risk scale.

Environment Canada warned that forest fires may keep the air dangerous to human health through most of the week.

Ottawa was officially at a 10+ on Environment Canada’s Air Quality Health Index Tuesday morning, which is its highest level and the highest among the country’s major cities.

This meant the general public should reduce or reschedule strenuous outdoor activities, and people at risk of serious health problems from pollution, including seniors, young children and pregnant people, should avoid these types of activities.

By early afternoon, it settled down to 10, which was still high.

Monica Vaswani, warning preparedness meteorologist for Environment and Climate Change Canada, said the air quality index maxes out at 10 for forecasting purposes.

But Ottawa’s readings actually hit as high as 14 on an internal scale on Tuesday, double what the ministry requires for issuing an air quality statement.

“That just gives you an idea that it is definitely, in some ways, off the charts,” she said.

“Don’t expect a return to normal anytime soon,” Vaswani said, adding that winds from the north and northeast will keep pushing plumes of smoke from Quebec toward Ottawa.

There’s also little sign of significant rainfall over the workweek or longer and the forest fires might actually prevent rain from forming, she noted.

“Unless the forest fires themselves reduce in some fashion, the weather is not going to change really,” she said. “So more likely than not the air quality is going to remain … bad.”

Environment Canada still has smog warnings for areas north and east of Gatineau and special air quality statements for the rest of eastern Ontario and western Quebec.

Vaswani said the poor air quality in Ottawa is driven by high levels of fine particulate matter in the air from the forest fires.

As of Tuesday at 8 a.m., Ontario’s Ministry of Environment, Concentration and Parks was reporting levels of that pollutant well in excess of healthy levels. Concentrations of fine particulate matter were 267 micrograms per cubic metre.

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