Canadian Wildfire Smoke Blankets US Midwest, Mid-Atlantic, Northeast

Smoke from Canadian wildfires is again blanketing large areas of the United States, impacting an estimated 109 million people across the Midwest, Mid-Atlantic, and Northeast regions. Residents in affected areas are experiencing poor air quality, leading to warnings to stay indoors and limit outdoor activities.

Cities such as Chicago and Detroit have been particularly affected. On Friday, the Air Quality Index (AQI) in Detroit reached a "hazardous" level of 361, according to data from the government website AirNow. This level of pollution poses significant health risks, prompting advisories for vulnerable populations to avoid strenuous exertion.

The widespread smoke is a continuation of a trend seen throughout the summer, with numerous wildfires burning in Canadian provinces, notably Ontario. The prevailing wind patterns have been carrying the smoke plumes southward into the United States, creating widespread haze and significantly reducing air quality across multiple states.