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Wildfire Smoke From Minnesota and Canada to Blanket Wisconsin Starting Tuesday Night

The Wisconsin Department of Natural Resources said smoke from wildfires in Minnesota and Ontario could bring hazardous air to northwest communities.

  • On Tuesday, the Wisconsin Department of Natural Resources issued a statewide air quality advisory as wildfire smoke blanketed Wisconsin, with conditions potentially reaching "very unhealthy" levels through Thursday at noon.
  • Smoke from 16 fires burning in northern Minnesota and Canada, including three in the Boundary Waters Canoe Area Wilderness, pushed into Wisconsin Tuesday, driven by hot, dry conditions that rapidly expanded the blazes.
  • Monitors recorded hazardous soot pollution levels of 784 in Duluth and 595 in Superior by Wednesday morning, as Dr. Kristie Johnson of Tamarack Health in Ashland warned that smoke particles "create inflammation to protect our lungs."
  • By Wednesday noon, smoke reached an Eau Claire to Sheboygan line and continued south-southwest toward La Crosse and Janesville by midnight, with statewide impacts expected by 6 a.m. Thursday.
  • Climate experts note that warmer, shorter winters and drought have expanded wildfire seasons; DNR officials expect the advisory will "likely be extended for at least some portion of the state" beyond Thursday noon.
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Wisconsin State JournalWisconsin State Journal
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Wildfire smoke from Canada, Minnesota heads for Wisconsin amid heat wave

The heat wave is forecast to peak by Wednesday as wildfire smoke spreads from north to south across the state.

·Madison, United States
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WLUK broke the news in Green Bay, United States on Tuesday, July 14, 2026.
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