Wildfires in Canada are sending heavy smoke across the northern U.S., and New Jersey is experiencing some unhealthy air ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

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 ...

MINNEAPOLIS (FOX 9) - An air quality alert has been issued for all of Minnesota starting Sunday due to wildfire smoke from ...

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

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

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

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

The air quality index, or AQI, measures the air quality and level of health concern it presents as measured by the Environmental Protection Agency. The AQI is measured on a scale of 0 to 500.

An air quality advisory is in effect for the Lower Peninsula of Michigan due to wildfire smoke from Canada. Sensitive groups, such as those with respiratory issues, should limit outdoor activities.

In Lansing, as of 10 a.m. on June 4, AirNow's Air Quality Index reflected a "moderate" reading with a PM2.5 of 81 — meaning the sensitive groups may be harmed by poor air quality, and people ...