Urban ash from the California wildfires that has settled across the state has now been found more than 100 miles offshore.

The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

Fort Eisenhower residents have voiced concerns about the use of controlled burns and recent mechanical mulching operations ...

Reps. Laura Friedman, D-Burbank, and Judy Chu, D-Pasadena, were joined by Reps. Brad Sherman, D-Sherman Oaks, and George ...

As hazardous chemicals pollute the air after devastating wildfires, officials call for increased monitoring to protect ...

Learn about the lasting impact of wildfire smoke on urban surfaces and human health. Discover how these toxic pollutants ...

As crews work to clean up from the Los Angeles wildfires, city officials and residents are opposing the designation of a ...

When a fire burns in an urban area, it unleashes a slurry of chemicals. Scientists are trying to understand the chemistry at ...

Doctors from National Jewish Health talk about how to know if you’re at risk, and steps you can take to protect your heart ...

Toxic chemicals from L.A.'s fires are going underreported and pose serious long-term risks, a group of lawmakers says. They ...

Yu also advised LA residents to wear P100 masks, which can filter at least 99.97% of airborne particles and are more ...

Crews will remain on scene throughout the night to ensure containment efforts continue. At this time, there are no active ...