SAN FRANCISCO (KPIX) — The SQF Complex Fire, smoldering since late August in the Sequoia Nat’l Forest in the southern Sierra Nevada, blew up Saturday, sending a huge plume of smoke into the Central Valley and southern Bay Area. Darren Peck analyzes its potential impact on our unhealthy air.

Smoke from the SQF Complex Fire

Smoke plume from the SQF Complex Fire in the southern Sierra Nevada. (KPIX)

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