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An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...
Minnesota authorities warned of unhealthy levels of exposure to particles from wildfires. Symptoms include shortness of ...
3don MSN
Smoke from Canadian wildfires has carried another day of poor air quality south of the border to the American Midwest.
Living in the Midwest means being affected by the Canadian wildfires that occur just about every year. Here is what to know ...
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