photochemical smog

References

Images

Thick brown layer of smog obscures the Los Angeles skyline, with city buildings and neighborhoods visible beneath a blue sky.

photochemical smog: Media

air pollution

Images

Thick brown layer of smog obscures the Los Angeles skyline, with city buildings and neighborhoods visible beneath a blue sky.

Los Angeles smog

A pall of photochemical smog over Los Angeles in November 2016. Photochemical smog,...

© Daniel Stein—iStock/Getty Images