Smoke from ongoing wildfires across Canada continued to drift into parts of the United States on Wednesday, causing hazy ...

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

Another air quality alert is in effect Tuesday for NYC, western Long Island, the Hudson Valley, northwest New Jersey and ...

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

Hundreds of wildfires in Canada are creating unhealthy air quality conditions across the Midwest, including Michigan, where ...

Smoke from wildfires in Canada reached Connecticut’s skies and caused poor air quality on Tuesday, according to state ...

PM2.5 — is expected to push the Air Quality Index over 100, reaching levels unhealthy for sensitive groups, including ...

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's what to know.

The smoky air is predicted to reach New York City on Monday, and it could bring unhealthy air quality for sensitive groups.

Forecasters predicted around 70 million people would see decreased visibility and poor air quality, including residents of Chicago, Detroit, New York, St. Louis and Cleveland.

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.

The Midwest saw some of the worst air quality conditions in the world Thursday, and similar conditions are expected to ...