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More than 739 fires are burning in Canada, and smoke crossing the border has triggered air quality alerts in several U.S.
Wildfire smoke from Canada's Prairie provinces has triggered widespread air-quality warnings across the country, impacting ...
Torontonians are being urged to limit their time outside as smoke blows into the city. But smoke will still leak inside, ...
The air quality is expected to improve Thursday morning into Thursday afternoon, according to the weather agency.
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