WATCH: Desperate search for the missing in the California wildfire

WATCH: Desperate search for the missing in the California wildfire

Transcript for Desperate search for the missing in the California wildfire

on record. Authorities now reporting roughly 1300 residents still unaccounted for in the camp fire in northern California. Imploring residents to check in. But, this is nearly impossible for some as communications remain spotty. There are also mounting concerns about what’s next for tens of thousands of residents left homeless and the sustainability of what you see here. Makeshift tent cities and other shelters. President trump toured the devastation on Saturday with state officials. Air quality turns toxic. Smoke hanging low over several major cities. And people having to use masks to help breathe. And while authorities have made progress containing the camp fire, it counts to burn. With wind gusts threatening to breathe new life into the flames. ABC’s Marcus Moore is in chico. Reporter: More than a week after one of the nation’s deadliest wildfires ravaged northern California, tonight, the suffering and the number of the missing continues to grow. Nearly 1300 still unaccounted for. The search for the missing happening at shelters and tent carps like this where whiteboards are filled with the names of the missing. I would ask that people make every diligent effort to reach out to friends and families. Let them know that they’re okay. And also, check with us and let us know that they’re okay so we can devote our resources to locating people who haven’t yet been accounted for. Reporter: President trump touring parts of the disaster Zones this weekend. With California governor Jerry brown and governor elect Gavin Newsom, promising the full resources of the federal government. I would like to feel sorry for myself. When I think of all those people who didn’t make it out, I am thankful to be here. Nearly 79 have died across the state. 76 from the camp fire alone. Crews in hazmat suits with the grim task of trying to find incinerated bodies as firefighters continue to battle the flames. The air quality in the region an urgent concern. With smoke from the camp fire likened to smoking 11 cigarettes in a day. It’s serious. It’s gone on for days. I want to guard my family’s health. Reporter: One of the many challenges for the thousands of displaced near paradise. A town burned from the map. A reported deadline to force some living in a Walmart parking lot from their place of refuge today came and went. Tonight there is growing concern about the sanitary conditions of these makeshift shelters. More than 1,000 people seeking shelters at a dozen locations. At least one affected with norovirus. Marcus Moore joins us from inside one of those tent cities that have popped up outside of paradise. Many families seeking new shelters. But some are remaining right where you are? Reporter: Yeah, that’s right, Tom. You can see the dozens of tents off in the distance behind me. There is concern tonight. Particularly on Tuesday when it is expected to rain. While it may help firefighters in their battle against the camp fire, it presents a real danger for the people here. Including the potential for flooding. And Tom, even more unsanitary conditions. The rains could be a blessing and a curse. Marcus Moore, thank you so much.

This transcript has been automatically generated and may not be 100% accurate.

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