Hundreds of deaths have so far been linked to the heatwave. Canada’s British Colombia reported 486 "sudden and unexpected deaths" over five days, a 195 per cent increase, while at least 63 deaths were reported in Oregon. Washington state said more than 20 deaths were caused by heat.
Several bodies were recovered in lakes, rivers and beaches across the Pacific Northwest. Families search for loved ones separated in the chaos of wildfires as entire villages, like Lytton in British Colombia, are being evacuated.
As the emergency response continues, extremely little is has been revealed about the victims and their exact causes of death.
This is what is currently known.
Two men found in Willamette River
Thomas Paul Stavrum, 51, of Lafeyette, and Nasiruddin Shaik, 37, of Salem, were found on Wednesday, 30 June after being reported missing on the weekend, according to KOIN.
The pair were believed to have been together when they went missing on Saturday, 26 June.
Mr Stavrum was last seen swimming in the river and was found by two kayakers, while Mr Shaik was last seen struggling near the Wheatland Ferry, the Yamhill County Sherrif’s Office said. He was found by a Yamhill County drone about half-mile downriver of the Ferry.
Mother searches for son after evacuation
Lytton resident Cheryl James evacuated the small town in British Colombia with her daughter and son-in-law. She told CBC that her son, Edward, stayed behind to help fight the fire.
"He told me to leave, and I told him he better not stay too late," Ms James told CBC in an interview from the evacuation centre. "I hope he’ll come here."
Missing swimmer presumed dead
Jose Pascual, 21, who disappeared swimming in Sandy River on Sunday, 27 June is presumed dead, according to KOIN.
Search efforts turned to recovery efforts as rescue crews and dive teams combed the area around Dabney State Park where Mr Pascual disappeared in the glacial runoff from Mount Hood.
Two elderly women in Washington State
A 65-year-old Seattle woman and a 68-year-old Enumclaw woman died from heat exposure, or hyperthermia, according to the King County Medical Examiner’s office.
Two homeless men in Bend, Oregon
As temperatures reached 111F degrees in Bend, Oregon, two men at a homeless camp died on 27 June, according to The Bulletin.
Four-year-old boy falls out of kayak
Rescuers recovered the body of a 4-year-old boy from Skykomish River, in King County on Monday, according to The Seattle Times. He had reportedly fallen out of a kayak on the river.
Horseshoe Lake claims a life
A Port Orchard man is believed to have drowned on Horseshoe Lake, on Key Peninsula, Monday afternoon. South Kitsap Fire and Rescue said onlookers pulled him from the water and performed CPR, but he did not survive.
Woman who couldn’t swim drowns in beach
Officials said a 48-year-old Salem woman who didn’t know how to swim was pulled underwater when the weather turned and calm water suddenly became rough at a beach near Lincoln City.
She was reportedly pulled beneath the surface by a rip current on Monday near the north end of the beach, according to KOIN. She was found facedown and died at the hospital.
Man found by divers
A 77-year-old Rogue River man drowned on Saturday near Crescent Lake, according to Klamath County Sheriff. Witness said he had been in the water for about an hour before he was found by divers in the area, KTVZ reported.
The Associated Press contributed to this report