The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast. Air ...

Air quality alerts are now in place for 10 states from Minnesota to Connecticut and, on Tuesday afternoon, Boston is expected to see a nice break from the smoke thanks to onshore winds keeping smoke ...