The president and his administration have sought to pin the blame for the large wildfires on state officials, saying fuel-choked forests and scrub need to be thinned, firebreaks must be cut and flammable dead leaves cleared from forest floors.
A satellite photo taken Saturday shows a pall of smoke from wildfires ravaging the West Coast stretching across the United States as far as MI.
More people are pushing out into wildfire-prone areas as population growth clashes with a housing shortage and an affordability issue, contributed to by the tech boom in northern California.
By Monday morning, more than 3.3 million acres have been burned in the Golden State this year - more than 27 times more than in 2019, according to the California Department of Forestry and Fire Protection. "[A president] who understands that the damage from climate change is already here". She has tweeted that Trump has "denied evidence" the fires were "intensified by the climate crisis".
"The debate is over around climate change".
The state is also deploying its National Guard to flattened neighbourhoods and up to 1,000 troops will be there by the weekend, the head of the Oregon National Guard said. "We absolutely must act now to avoid a future defined by an unending barrage of tragedies like the one American families are enduring across the West today", Biden wrote. All of the state's forests are classified as being in "extreme fire danger". And it had back-to-back heat waves.
"This is truly the bellwether for climate change on the West Coast, " she said Sunday on CBS' "Face the Nation".
California Governor Gavin Newsom acknowledged that his state had not done enough to manage forests and has acknowledged that more than a century of fire suppression has allowed fuel to build up.
Millions of dollars are spent on tree thinning and brush clearing every year in Western states, though many argue more needs to be done.
Los Angeles Mayor Eric Garcetti accused Trump of perpetuating a lie that only forest management can curtail the massive fires seen in recent years. "You're experiencing climate change".
"The hots are getting hotter".
In southern OR to Northern California, warnings of low moisture and strong winds - conditions that can drive the flames - are in effect through Tuesday. Tens of thousands of people have fled their homes as the fast-moving flames turned neighborhoods to nothing but charred rubble and burned-out cars.
At least 10 people have been killed in Oregon.
At least 25 people have perished in California wildfires since mid-August, and one fatality has been confirmed in Washington state.
Firefighter Steve McAdoo, who has run from one blaze to another in OR for six days, said his neighbors in rural areas outside Portland should clear trees near their homes because a week like they just survived could happen again.
"I think this is more of a management situation", Trump said, when asked by a reporter if climate change was a factor behind the fires, saying many other countries were not facing a similar problem.
In the small southern OR town of Talent, Dave Monroe came back to his burned home, partly hoping he'd find his three cats. Nearly the same number of "megafires" - defined as having scorched 100,000 acres or more - were burning last week as have occurred during the entire last century, said Jim Gersbach, spokesman for the Oregon Department of Forestry. "There is something going on, that's for sure, man".