When a volcano starts flaring up, sputtering and spewing emissions into the atmosphere, vog often develops. Posted: January ...

Experts say that even after fires are contained and extinguished, health risks from ash, smoke, and toxic materials, ...

Officials are warning of windblown ash and other pollutants from Los Angeles-area fires and say air quality readers won't ...

A particularly dangerous situation red flag warning is in place from noon Monday to 10 a.m. Tuesday local time for a large ...

Honor Dr. Martin Luther King Jr. by volunteering, eat at one of the many restaurants supporting first responders, Jill Sobule ...

"It was like stepping into a surreal world under a dark cloud of gloom. "Exiting the terminal at Los Angeles International ...

Explore daily insights on the USA TODAY crossword puzzle by . Uncover expert takes and answers in our crossword blog.

Air quality in Los Angeles has improved as the Palisades and Eaton wildfires ... The AQI was designed to represent health ...

There's confusion over how safe air quality is in L.A. as fires continue to burn, spewing wildfire smoke and toxins. We look at air quality readings, what's real and what's not and what people can do.

The sky over L.A. has previously contained signs, and people had the good sense to heed them. Before water from the Owens ...

According to Oregon and California’s fire departments, trucks were stopped in Davis, California, just outside Sacramento, for ...

LOS ANGELES -- Firefighters scrambled Sunday to make further progress against wildfires that have destroyed thousands of homes and killed 24 people in the Los Angeles area as forecasters again ...