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NewsSouth Florida ReporterJuly 16, 2026United States

Wildfire Smoke Causes Unhealthy Air Quality Across North America

Massive plumes of smoke from over 800 wildfires in Canada are moving across the United States, causing unhealthy air quality levels in cities like Toronto and Boston. Health officials and meteorologists are advising residents to limit outdoor activity as the smoke is expected to persist through the week.

wildfiresair qualitypublic healthenvironmentCanadaUnited States
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Why It Matters

Residents in the Great Lakes and New England regions face immediate health risks from poor air quality, which may limit outdoor activities and require precautions for sensitive groups and pets.

Key Facts

  • Over 800 wildfires are currently burning across Canada.
  • Toronto recorded an Air Quality Index (AQI) of 220, classified as 'very unhealthy'.
  • Boston recorded an AQI of 147, classified as 'unhealthy'.
  • Air quality alerts have been issued for Wisconsin, Michigan, New York, and Massachusetts.
  • Dense smoke coverage is expected to expand through Thursday to include Detroit, Cleveland, New York, and Philadelphia.
  • Health impacts include difficulty breathing, throat irritation, and itchy eyes.
  • Sensitive groups are advised to avoid outdoor activity.
  • Residents are encouraged to keep pets indoors to limit exposure.

Who's Mentioned

personDan DePodwin“AccuWeather Vice President of Forecast Operations.”organizationPlume Labs“Source of health impact information.”locationCanada“Primary source of the wildfires.”other220“AQI level recorded in Toronto.”locationToronto“City experiencing very unhealthy air quality.”personBreanna Grill“AccuWeather Meteorologist.”other147“AQI level recorded in Boston.”personBrian Lada“AccuWeather meteorologist and author of the report.”locationBoston“City experiencing unhealthy air quality.”other800“Number of wildfires currently burning in Canada.”