Almost 40 fires continued burning in Ontario, Canada, this week.
"Those with heart or lung disease, or who have a previous history of stroke, should consider leaving the area."
Lost in the flames was the American flag given to him at his veteran father's funeral.
"No one says anything about them—they're heroes," said the mother of one of the 3,400 inmates fighting deadly wildfires throughout the state. "They don't get the credit and they work so hard."
Fire officials have managed to completely contain the River Fire, which merged with the Ranch Fire to create the Mendocino Complex Fire.
Some 20,000 people are impacted by 566 fires burning in the region.
Satellite data from NASA shows the concentration of the carbon monoxide drifting eastward from California.
The air quality Tuesday was deemed unhealthy in some areas.
"I've heard the climate change argument back and forth. This has nothing to do with climate change. This has to do with active forest management."
Forrest Clark, 51, of Trabuco Canyon, California, is being held in lieu of $1 million bail for allegedly starting the Holy Fire ravaging Trabuco Canyon, California. He faces life in prison if convicted, The National Forest Service said.
The summer of 2018 brought an epidemic of major wildfires in the Northern Hemisphere.
In certain remote, rugged areas, the sturdy pack animals are sometimes the only option for delivering supplies.
The Mendocino Complex Fire is the largest wildfire recorded in California's modern history. It is among 17 wildfires that thousands of local and international firefighters are beating back. Residents must make a split-second decision to evacuate or face peril by staying put.
The president has claimed that the devastating California wildfires can be solved by simply stopping water from being diverted to the Pacific Ocean.
Gusting winds, triple digit temperatures and almost zero chance of rain in Northern California pose a persistent threat to firefighters.