Dust and ash left behind from the wildfires across Southern California can be irritating and hazardous when inhaled.

As fires burn across Los Angeles County, spurring thousands of evacuations, drifting smoke is affecting the L.A. area and beyond. Wildfire smoke can be harmful to health, especially for children ...

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

Fire spotters used to watch with binoculars from forest towers. Now, technology can help forecast fire behavior, but human ...

Firefighters have stopped the deadly flames from damaging the historic Mt. Wilson Observatory and NASA's Jet Propulsion ...

As Southern California winds contribute to the spread of a major wildfire, map tools from NASA and Esri help first responders.

Here are fires that started in San Diego this week: A brush fire was burning close to homes in La Jolla on Thursday afternoon ...

Although the AQI may show green, hazardous ash may be present ... matter such as fine particle pollution found in smoke. With ...

Satellite imagery shows neighborhoods burned down, roads closed, and fires spreading across Los Angeles.

Among pregnant people, studies show that wildfire smoke exposure may affect the baby's development and increase the chances of the baby being born early or underweight. Who Is Most at Risk From ...

Photos taken of the Hughes Fire around Castaic Lake, California captured the massive blaze and cloud of smoke visible from ...