The sky over L.A. has previously contained signs, and people had the good sense to heed them. Before water from the Owens Valley was brought to L.A., and Hollywood studios began to line its boulevards ...

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

No emissions or SMOG testing was performed ... from Oregon fighting the fires in the Pacific Palisades area of Los Angeles, and resting in the fire engines they brought across state lines.

LOS ANGELES — Disaster is in the air ... outside the critically threatened areas are unnaturally quiet. The usual smog overhead has been replaced by a haze more tinged and ominous.

Los Angeles is a trap. Everyone who lives there knows it. The basin formed by the ring of mountains around the city traps smog, preventing it from dissipating safely into the inland desert.

The fires killed at least 27 people, triggered mass evacuations, blanketed the Los Angeles area in smoky smog and poor air quality, and sparked criticism over government preparedness. On Sunday ...

Rumors spread on social media last week that Oregon fire trucks headed for the historic fires were stopped and inspected for emissions levels by California state workers and either delayed or sent ...