Canadian wildfire smoke triggers air quality alerts across 17 states
More than 100 wildfires are burning in Canada, and strong winds are pushing smoke south into the U.S.

Wildfires burning in Canada and Minnesota sent smoke blowing over a huge swath of the U.S. on Wednesday, giving the sky an apocalyptic haze. The smoky skies are likely to linger – and even worsen – in the next couple days before there's a chance of improving.
More than 100 wildfires are burning in Canada, and strong winds are pushing smoke south into the U.S.
"Every New Yorker should take precautions. Limit your time outdoors, especially strenuous activity," Mayor Mamdani warned Thursday.
President Trump is threatening to raise tariffs on Canada over wildfire smoke that drifted from the country into the U.S., triggering health warnings and disrupting outdoor activities.Why it matters: Dealing with Canadian wildfire smoke is becoming a semi-regular occurrence in the Midwest and Northeast.It degrades air quality, exposing millions to short-…