State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is small enough to be inhaled.

Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into the U.S. again. The pace of the 2025 fires is reminiscent of the record-breaking 2023 wildfire season,

Minnesotans are inhaling another plume of smoke from Canada this week, and an attempt to blame Canada's handling of wildfires is being met with eye-rolls north of the border. Why it matters: Experts say smoky summers are likely the new normal in Minnesota and many parts of North America unaccustomed to dealing with the haze as climate change turns the continent's forests into tinderboxes.

Considering wildfires, and prevailing winds blowing from Canada, are expected to become more frequent, the impact on crops will remain an area of study.

A group of Republican lawmakers has complained that smoke from Canadian wildfires is ruining summer for Americans, just days after voting for a major bill that will cause more of the planet-heating pollution that is worsening wildfires.

An air quality alert is in effect for nearly the entire state through Friday, but northern and central Minnesota will bear the brunt of it, due to their proximity to Canadian wildfires.

A Hazardous Weather Outlook is also in effect across the region. The National Weather Service issued the outlook because of smoke blanketing Wisconsin amid Canadian wildfires in Manitoba and Ontario. The smoke is being transported south by wind patterns, leading to air quality alerts and advisories across the state.