Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

The smoke from Canadian wildfires produced some of the worst fine particle pollution on record in Minnesota over the weekend.

An air quality alert was in effect for the Chicago area and northwest Indiana Tuesday as poor air quality from unhealthy, ...

Northern Minnesota and northern Wisconsin remain under an Air Quality Alert Monday due to wildfire smoke. Conditions are ...

Air quality across Minnesota was pretty bad this past weekend. It was so bad that it was ranked as some of the worst in the ...

The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility on the Grand Canyon's North Rim.

A fast-moving wildfire near the Grand Canyon’s North Rim has destroyed the historic Grand Canyon Lodge and dozens of other ...

Wisconsin, Minnesota and Indiana all have air quality alerts, while Chicago's air quality currently ranks in the "unhealthy for sensitive groups" category.

The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility, and the White Sage Fire, located in ...

Much of the Upper Midwest on Saturday was dealing with swaths of unhealthy air because of drifting smoke from Canadian wildfires, covering the northern region of the U.S. at a time when people want to ...

A historic lodge was swallowed by flames and brought to rubble after a fast-moving wildfire erupted in Arizona 's Grand Canyon National Park.

LINCOLN, Neb. (KOLN) - Canadian wildfires are impacting the air quality in Lincoln. On Sunday, Airnow.gov rated Lincoln’s air ...