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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 ...
Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...
In the upper Midwest of the United States, Michigan, Wisconsin and Minnesota have issued air quality warnings as smoke from ...
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