"Wildfire Smoke Engulfs the US: 20 States Struggle with Hazardous Air Quality. A massive plume of smoke from Canadian wildfires has swept across the US, plunging 20 states into a haze of hazardous air quality. The smoke, carried by strong winds, has reached as far south as the Midwest and as far east as the Northeast, prompting health warnings and concerns for residents with pre-existing respiratory conditions. As the situation continues to unfold, experts warn that the prolonged exposure to poor air quality could exacerbate health issues and have long-term effects on the environment."
Air quality plummets in 20 states as smoke from Canadian wildfires spreads across the US The Guardian