Heavy smoke from more than 100 wildfires burning in Canada, along with fires in northern Minnesota, has blanketed large parts of the Midwest and Northeast, prompting widespread air quality alerts across the United States.
Air quality alerts remain in effect across Minnesota, Michigan, Wisconsin, New York, New Jersey, Pennsylvania and parts of New England. Authorities warned that high levels of fine particulate pollution could pose serious health risks, particularly for children, older adults and people with heart or lung conditions.
According to experts cited by the report, residents should stay indoors where possible, wear N95 or KN95 masks outdoors, and use air purifiers or air conditioning to reduce smoke exposure.
The report said prolonged drought and extreme heat have fueled the fires, while long-term exposure to wildfire smoke has been linked to thousands of premature deaths annually in the United States.
Related Tweet:
WOW: Canadian wildfire smoke from over 850 active blazes is heavily polluting major U.S. cities today, pushing air quality into very dangerous and hazardous levels across the Upper Midwest, Great Lakes, and Northeast.
— RedWave Press (@RedWavePress) July 17, 2026
Fox & Friends: “With air quality alerts in 20 states…… pic.twitter.com/JwIgrQHTlc
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