PORTLAND, Maine — Smoke from Canadian wildfires worsened air quality in the eastern U.S. on Wednesday as several Midwestern ...

Smoke from Canadian wildfires drifted into large portions of the U.S., creating hazy skies and worsening air quality.

Smoke from numerous wildfires burning in south-central Canada has drifted over New Hampshire, and it's leading to reduced air ...

An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...

At midday Thursday the smoke is expected to be visible over most of Michigan. The central and western U.P. may have nearly a ...

Smoke from wildfires in Canada reduced air quality in Kansas City on Wednesday, June 4. The Mid-America Regional Council ...

Smoke tied to ongoing wildfires in Canada is again expected to affect air quality levels in parts of Nebraska.

Wildfires in Saskatchewan and Manitoba continue to burn out of control as fierce winds and bone-dry conditions intensify the crisis, forcing evacuations and threatening northern communities. As of ...

The advisory, sparked by smoke from Canadian wildfires, is effective from 6 a.m. Thursday through noon Friday.

An air quality advisory was issued for most of Southern Wisconsin Wednesday that saw areas with unhealthy breathing ...

"There's no such thing as safe wildfire smoke; any of it is too much for us. It's important that we get prepared and we're ...

Logan Airport broke 80 degrees before noon Wednesday as the air heated under hazy skies prompted by wildfire smoke drifting ...