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Where are wildfires in Canada? See tracker, smoke and air quality maps
Smoke from more than 850 Canadian wildfires pushed Milwaukee to its worst air quality on record, and Wisconsin’s alert was extended through Friday.
On Thursday, July 16, Milwaukee experienced its worst air quality on record as smoke from Canadian wildfires blanketed parts of the United States.
More than 850 active wildfires are burning across Canada, with 113 listed as "out of control" by the Canadian Wildland Fire Information System, concentrated in Ontario and border regions.
Wildfires in Minnesota burned more than 60,000 acres since July 15, while Milwaukee recorded AQI readings between 396 and 519 in hazardous conditions.
Wisconsin Department of Natural Resources officials extended the statewide air quality alert until noon Friday, July 17, while National Weather Service meteorologist Kevin Wagner noted relief remains days away.
Although the 2026 wildfire season has not reached record-breaking levels of 2023 and 2025, Canadian officials expect fire danger to increase as summer continues.