The amount of fine particulate matter (known as PM2.5) in Ottawa’s air is usually in the range of four to 11 micrograms per cubic metre.
On a typical day, air quality readings around the Ottawa region are in the two to three range, Monica Vaswani, a warning preparedness meteorologist with Environment and Climate Change Canada, told this newspaper earlier this week.The amount of fine particulate matter in Ottawa’s air is usually measured in the range of four to 11 micrograms per cubic metre. When that reading hit 60 earlier this week, Environment and Climate Change Canada issued an air quality warning.
“It does look like it will probably deteriorate on Saturday night into Sunday, but it is hard to say how bad — likely not to be as bad as in the past days.” This summer is expected to be one of the worst for forest-fire damage and air-quality warnings in recent history.
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