Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into ...

Officials warned young children and those with respiratory illnesses to take precautions. For weeks, smoke from Canadian ...

As wildfire smoke becomes a frequent summer hazard across large parts of the US, knowing the risk at the neighborhood scale ...

State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is ...

Summer smoke from Canadian wildfires is once again hazing out Minnesota skies — just in time for your long-awaited Northwoods ...

But when smoke plumes are close to the surface, people are breathing in wildfire chemicals and tiny particles. Those particles, known as PM2.5, can get deep into the lungs and exacerbate asthma and ...

The Monroe Canyon Fire burning in Sevier County continues to grow, with Monday bringing the "hottest temperatures so far" and ...

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

A smoky haze wafted over parts of western Colorado on Thursday from wildfires burning in and around the state. The smoke is ...

BISMARCK, N.D. (AP) — Much of the Upper Midwest on Saturday was dealing with swaths of unhealthy air because of drifting smoke from Canadian wildfires ... on a U.S. Environmental Protection Agency map ...

ANTIOCH — A 10-acre fire that broke out in Antioch on Tuesday afternoon prompted a public health advisory for smoke, ...

A smoke map from NOAA shows Colorado will be almost entirely covered with smoke on Thursday as wildfires burn thousands of acres on the Western Slope.