North America wildfires explained: North America faces an intense fire season with millions of acres already burned. Climate change drives increased heat and drought, fueling destructive wildfires across regions.

After sitting together with Prime Minister Mark Carney during Sunday’s World Cup final in New Jersey, U.S. President Donald Trump isn’t letting up on his threat to tariff Canada over wildfire smoke.

“We’re starting to tap into cleaner air from eastern Canada,” said Richard Bann, a meteorologist with the Weather Prediction Center, “and we’ll start to get some of that in the Northeast.”