While smoke is bad for everyone, children, older adults, pregnant people, people with heart and lung disease, and people who can’t avoid exposures, such as outdoor workers and people living outside, ...

Fires send a mixture of smoke and tiny particles called PM 2.5 — particulate matter — into the air. When you smell smoke, you're actually smelling just the gases, not the particles, said ...

The main hazard in wildfire smoke is PM 2.5, or particulate matter smaller than 2.5 microns (a millionth of a meter). This is bad for anyone to breathe, but especially hazardous for those with ...

But, of course, edge cases exist. You may be close to a fire and not be impacted at all, depending on the wind and the altitude," AccuWeather Lead Wildfire Smoke Expert Dr. Boris Quennehen said.

“No. 1, we find that wildfire smoke is the fastest-growing source of dirty air in the country by far, and No. 2, it’s unregulated by our key air quality regulation,” said Stanford’s Burke.

FRESNO, Calif. (KFSN) -- Cal Fire crews battled a wildfire in the Fresno County community of Prather on Sunday. ABC30 Insider Kathleen Trumbly sent us photos of the smoke and an air tanker ...

The Shady Fire in Thermal reached full containment over the weekend. But, in the aftermath of the 52-acre brush fire, ...

Storms rumbling through Central Oregon Monday brought hundreds of lightning strikes that have ignited more than a dozen fires so far - most stopped by crews at a very small size, but two that were ...