Smoke from Canadian wildfires began to worsen air quality in the eastern U.S. on Wednesday as several Midwestern states ...

A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

Smoke from more than 100 wildfires blazing in Canada is expected to spread to impact air quality in more U.S. state.

More than 25,000 residents in three provinces have been evacuated as dozens of wildfires remained active Sunday and ...

Smoke from the Canadian wildfires continues to bring dangerous air quality to parts of the northern U.S., with hazy skies possible.

Chicago had the worst air quality overnight Wednesday into Thursday, the latest American city to feel the impact of wildfire ...

Air quality alerts and advisories have been issued in multiple states as Canadian wildfire smoke continues to spread.

ABC News Chief Meteorologist Ginger Zee has the latest on the air quality alerts across the Midwest caused by smoke from the Canadian wildfires and the severe storms possible across the South.

Air quality alerts have also been posted for the Interstate 95 corridor in the Northeast between Philadelphia, New York City ...

While both dust and smoke are similar, it's also important to point out their differences. Here's how to tell what's causing the haze in your skies.

Smoke spreading from wildfires in Canada was affecting air quality in multiple states on Tuesday. Parts of Minnesota, Iowa and Wisconsin were most at risk for unhealthy air, according to a federal ...