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By Doha Madani

California's deadliest-ever wildfire, the Camp Fire, and the devastating Woolsey Fire have been burning for a week or more, killing dozens, with hundreds of other people still missing, and billowing smoke that has brought hazardous levels of air pollution more than 150 miles away to the Bay Area.

The fires have together scorched more than 240,000 acres and destroyed thousands of homes and other buildings, leaving many homeless.

Here is quick look at the reach of these infernos.

A horse is spooked as the Woolsey Fire moves through a property in Agoura Hills on Nov. 9.Matthew Simmons / Getty Images

The toll of dead and missing

Northern California's Camp Fire is the deadliest wildfire in state history, with a death toll of 77 people so far, the California Department of Forestry and Fire Protection (Cal Fire) said on Monday.

Nearly 1,000 people — 993 — in the area of the fire were unaccounted for and have been reported missing, a Butte County Sheriff's spokeswoman said Monday morning.

Authorities are still actively working to recover and identify bodies, Butte County Sheriff Kory Honea said.

"I'm still actively engaged in the aspect of trying to recover human remains and that's something we've brought in a lot of resources in to help us do, as thoroughly as possibly in the circumstances, but as quickly as possible as we know we have to get people back into the area," Honea said Thursday.

Three people have died so far in the Woolsey Fire in the canyons west of Los Angeles including the Malibu area.

A search and rescue dog searches for human remains at the Camp Fire in Paradise, Calif on Nov. 16, 2018.John Locher / AP

Over 10,000 homes destroyed

The Camp Fire has scorched 11,713 residences and 472 commercial buildingsincluding practically wiping out the entire town of Paradise, according to the California Department of Forestry and Fire Protection (Cal Fire).

Paradise resident Emerald Mayfied told NBC News that her home was lost.

“I never made it back to the house,” Mayfied said. “But my kids got all the pets. And all the kids are safe. And the baby is good. So we’re doing good.”

At the other end of the state, the Woolsey Fire has burned down about 1,500 structures and damaged another 341 buildings.

Among those who have lost their homes are some celebrities, such as actor Liam Hemsworth and singer Miley Cyrus.

Firefighters battle a blaze at the Salvation Army Camp on Nov. 10, 2018 in Malibu, California.Sandy Huffaker / Getty Images

Dangerous air quality over 150 miles away

Smoke from the Camp Fire is blowing more than 150 miles away into the Bay Area, causing serious health risks for residents and leading to widespread school closures.

Winds that have kept the Camp Fire burning have also carried giant plumes of smoke south toward the heavily populated San Francisco area. The Air Quality Index was an "unhealthy" 171 in Oakland and 164 in San Francisco on Monday morning. Both cities' air quality was in the 200s on Friday, well into the zone of “very unhealthy.”

"Once you get to 150, that's mask-wearing stuff," said Stanley Young, spokesman for the California Air Resources Board.

NBC Bay Area reported that the smoke from the Camp Fire lowered the air quality in Northern California to the worst in the world, according to PurpleAir, an air quality monitoring app.

Investigators recover human remains at a home burned in the Camp Fire in Magalia, Calif on Nov. 15, 2018.John Locher / AP

Firefighters struggling to bring blazes under control

The Camp Fire, which began on Nov. 8, has burned 151,000 acres — the size of more than 114,000 football fields. As of Monday morning, it was about 66 percent contained.

The Woolsey Fire began the same day, and has swept across 96,949 acres. It was about 94 percent contained.

A handful of smaller burns started after the Camp and Woolsey fires but have been far less destructive.

For some perspective on the size, use the map below to compare each blaze to any of the 1,000 most-populous cities or towns in the U.S.