Smoke from Canadian wildfires persisted across the Upper Midwest on Friday, prompting air quality alerts for millions.

"It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and ...

The Mid-Ohio Regional Planning Commission has issued an air quality alert for July 23 for four central Ohio counties, ...

Air quality, smoke and ozone alerts are in effect for much of the state heading into a hot, smoky weekend. A red flag warning ...

Firefighters on the Green Fire in the Shasta-Trinity forest and Butler Fire in the Orleans Complex brace for storms on Friday ...

Firefighters bolstered containment on the Green Fire in the Shasta-Trinity forest, while the Orleans Complex grew. What to ...

Rainstorms over the July Fourth weekend brought as much as 22 inches of rain to the Highland Lakes region. Officials issue ...

As wildfires keep raging throughout Manitoba, air quality warning remains in effect. Environment Canada has given it a 10+ ...

Wildfires in Canada have been releasing plumes of black carbon into the Arctic, speeding up the melting of glaciers.