Most of North Dakota faces air quality ratings in the unhealthy to very unhealthy range, prompting officials to urge ...

The red alert, issued by the Minnesota Pollution Control Agency, means the air quality is unhealthy for everyone. It began at ...

The National Weather Service says Canadian wildfire smoke will return to Michigan Monday. Residents in northern Michigan should take precautions.

The North Dakota Department of Environmental Quality is warning residents about deteriorating air quality in the coming days due to smoke from Canadian wildfires.

A coronal mass ejection, or CME, was hurled out by the sun on Tuesday, NOAA’s Space Weather Prediction Center said. The CME, ...

Smoke from hundreds of wildfires in Canada has choked the skies over dozens of northern U.S. states in the Great Lakes and Northeast regions.

The New York State Department of Environmental Conservation issued the alert due to elevated levels of fine particulate ...

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 ...

As Canadian wildfire smoke lingers in the skies, the Chicago area will soon be under an air quality alert, but the smoke ...

Wildfire smoke from Canada has traveled to West Michigan, leaving a smoky haze. Here's how to track it where you live: ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states from Wisconsin to Maine.