Due to smoke from wildfires, several U.S. cities had an AQI over 100 on Aug. 5, which means the air is unhealthy for sensitive groups of people with respiratory and other health issues.

Anyone who might be especially vulnerable to the effects of air pollution should limit their outdoor activities.

The remaining 10 states affected by medium to heavy smoke from the wildfires are Colorado, New York, New Jersey, Connecticut, Pennsylvania, Vermont, Massachusetts, Indiana, New Hampshire, and ...

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.

CHICAGO (WLS) -- An air quality alert was issued for the greater Chicago area on Tuesday. The alert was issued by the EPA at about 11:56 a.m. It will be in effect until midnight. Lake, Porter, Newton ...

Environment Canada ended their air quality alert for Toronto on Tuesday, August 5, after smoke from ongoing wildfires in the ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

It has been a smoky summer across Mid-Michigan, with hazy horizons becoming the norm. For about a week, Michigan has been ...

On Tuesday morning, New York City had the ninth-worst air quality in the world, thanks in large part to the wildfire smoke ...

With wildfire smoke casting a haze over the Adirondacks, state health experts are warning of potential respiratory risks ...

Midwest and Northeast regions in the U.S. are seeing poor air quality from Canadian wildfires. See the map showing where the ...

STILL DEALING WITH THAT SMOKY HAZE OUT THERE FROM THE WILDFIRE SMOKE. THE SMOKE DID COME DOWN CLOSE TO GROUND LEVEL YESTERDAY, AND THAT’S WHAT WE’RE DEALING WITH THIS MORNING. BUT LOOK WHAT HAPPENS ...