Now playing
01:35
Heat wave breaks records in the West
PHOTO: MyHeritage
Now playing
01:01
Watch old photos come to life using AI
PHOTO: CNN/Getty Images
Now playing
06:46
McEnany says she expected 'peaceful' rally on January 6. Keilar rolls the tape
Now playing
01:26
No, Tom Cruise isn't on TikTok. It's a deepfake
PHOTO: ABC's "Jimmy Kimmel Live
Now playing
02:02
Eddie Murphy, Arsenio Hall reunite in 'Coming 2 America'
PHOTO: Courtesy AirlingRatings.com
Now playing
03:06
Virgin Atlantic CEO: We support Covid vaccine passports
Now playing
01:19
Warren proposes wealth tax: 'It's time for them to pay a fair share'
Now playing
01:43
Marriott CEO: Vaccinations are 'the key' to travel recovery
Now playing
01:23
'There should be no threats': Biden's message to union-busters
Ashley Vanderbilt Former QAnon believer
PHOTO: CNN
Ashley Vanderbilt Former QAnon believer
Now playing
07:40
Former QAnon believer shares bonkers conspiracy theory about Biden
snl.fauci.vaccine.orig_00005420.png
snl.fauci.vaccine.orig_00005420.png
Now playing
01:24
'SNL' has 'Dr. Fauci' helping people get vaccinated

Story highlights

Excessive heat warnings have been issued for parts of California, Nevada and Arizona

This heat wave is expected to last through the week

(CNN) —  

It’s so hot in the West that the scorching heat is breaking records, causing massive power outages and prompting flight cancellations.

On Tuesday, Phoenix hit a daily record reaching 119 degrees Fahrenheit, which ranked as the fourth hottest day on record for the Arizona city. Death Valley, California, lived up to its name as it set a daily record at a high of 127 degrees, according to the National Weather Service.

Las Vegas was also scorching and tied an all-time record high at 117 degrees Fahrenheit on Tuesday.

Excessive heat warnings have been issued for inland California, southern Nevada and parts of southwest Arizona until Friday. More than 29 million residents in California are under a heat warning or advisory.

Here’s how the sweltering heat wave is affecting the West:

1. Some planes can’t fly

The heat wave was already affecting travel in Phoenix, American Airlines canceled 43 flights Tuesday to and from Phoenix Sky Harbor Airport due to extreme heat, the airline said.

There could be more cancellations later Tuesday, an airline spokesman said. Seven flights were canceled due to weather on Monday, when the temperature reached 118 degrees, rounding out the total to 50 weather-related cancellations in two days.

Some smaller regional jets cannot take off in temperatures hotter than 117 degrees, it said in a statement.

“Our smaller regional operations – those that use our CRJ aircraft types – will be most affected by the heat,” the airline’s communication specialist Kent Powell told CNN. “We really aren’t expecting any change to the operation with our mainline aircraft.”

Because hotter air is thinner, planes also need more speed to take off and, thus, require more runway. Sky Harbor’s runways are long enough to accommodate most planes in hot weather, American Airlines said.

2. Heat records are being shattered

– In Phoenix, the 118 degrees on Monday tied the record set exactly a year ago.

– On Sunday, several Northern California cities – including Sacramento (106 degrees), San Jose (103 degrees) and San Francisco (88 degrees) – saw record hot temperatures.

Sacramento, California, saw record high temperatures of 106 degrees on Sunday, heat last seen almost 75 years ago, when it reached 105 degrees Fahrenheit.

High temperatures looking to surpass the new record of 106 degrees on Sunday.
High temperatures looking to surpass the new record of 106 degrees on Sunday.

– On Monday, Stockton, California, saw a record high of 109 degrees and Lancaster in southern part of the state had 110 degrees.

3. Wildfires are burning

Firefighters across California are battling several fires, including one near Big Bear spreading to 950 acres. They dealt with a grass fire in Sacramento that broke out during Monday’s evening commute.

Cal Fire warned of high fire danger with hot and dry conditions.

4. Power is being knocked out

Power outages have been reported over the last few days in California’s Central Valley, the Bay Area and southern parts of the state.

As temperatures increase, more people turn on air conditioners, which use a lot of electricity and can strain the power system.

Heat: The deadliest type of weather

Heat kills more people in the United States than any other type of weather.

What it actually feels like outside when you take into account the humidity and high temperature.
What it actually feels like outside when you take into account the humidity and high temperature.

Given the high temperature and humidity values forecast for this heat wave, it is important to watch for heat index values to get a better idea of the danger that awaits outside.

How to beat the heat

01:35 - Source: CNN
See what security looks like outside US Capitol
PHOTO: CNN
Now playing
01:35
See what security looks like outside US Capitol
PHOTO: Getty Images/CNN
Now playing
02:18
Bash: This is why key GOP senator is fighting Biden's stimulus
PHOTO: YouTube/Everyday Astronaut
Now playing
01:19
Watch SpaceX Mars prototype rocket nail landing, explode on pad
WASHINGTON, DC - JANUARY 16:  Physician to U.S. President Donald Trump Dr. Ronny Jackson listens during the daily White House press briefing at the James Brady Press Briefing Room of the White House January 16, 2018 in Washington, DC. Dr. Jackson discussed the details of President TrumpÕs physical check-up from last week.  (Photo by Alex Wong/Getty Images)
PHOTO: Alex Wong/Getty Images
WASHINGTON, DC - JANUARY 16: Physician to U.S. President Donald Trump Dr. Ronny Jackson listens during the daily White House press briefing at the James Brady Press Briefing Room of the White House January 16, 2018 in Washington, DC. Dr. Jackson discussed the details of President TrumpÕs physical check-up from last week. (Photo by Alex Wong/Getty Images)
Now playing
03:14
DOD releases scathing review of former White House physician
PHOTO: CNN/Getty
Now playing
02:10
'Highly misleading at best': Dale reacts to Pence's op-ed
PHOTO: Gov. Cuomo's office
Now playing
03:35
Gov. Andrew Cuomo addresses women's allegations
Commanding General District of Columbia National Guard Major General William J. Walker testifies before the Senate Homeland Security and Governmental Affairs/Rules and Administration hearing to examine the January 6, 2021 attack on the US Capitol on Capitol Hill on March 3, 2021 in Washington, DC. (Photo by Greg Nash / POOL / AFP) (Photo by GREG NASH/POOL/AFP via Getty Images)
PHOTO: GREG NASH/POOL/AFP via Getty Images
Commanding General District of Columbia National Guard Major General William J. Walker testifies before the Senate Homeland Security and Governmental Affairs/Rules and Administration hearing to examine the January 6, 2021 attack on the US Capitol on Capitol Hill on March 3, 2021 in Washington, DC. (Photo by Greg Nash / POOL / AFP) (Photo by GREG NASH/POOL/AFP via Getty Images)
Now playing
03:01
DC National Guard commander: 'Unusual' Pentagon restrictions slowed response to Capitol riot
Supporters of President Donald Trump hold up their phones with messages referring to the QAnon conspiracy theory at a campaign rally at Las Vegas Convention Center on February 21, 2020 in Las Vegas, Nevada.
PHOTO: Mario Tama/Getty Images
Supporters of President Donald Trump hold up their phones with messages referring to the QAnon conspiracy theory at a campaign rally at Las Vegas Convention Center on February 21, 2020 in Las Vegas, Nevada.
Now playing
03:00
Hear why QAnon supporters believe Trump will be president on March 4th
FBI Director Christopher Wray testifies before the Senate Judiciary Committee on the January 6th insurrection, in the Hart Senate Office Building on Capitol Hill in Washington, DC on March 2, 2021. (Photo by MANDEL NGAN / POOL / AFP) (Photo by MANDEL NGAN/POOL/AFP via Getty Images)
PHOTO: MANDEL NGAN/POOL/AFP via Getty Images
FBI Director Christopher Wray testifies before the Senate Judiciary Committee on the January 6th insurrection, in the Hart Senate Office Building on Capitol Hill in Washington, DC on March 2, 2021. (Photo by MANDEL NGAN / POOL / AFP) (Photo by MANDEL NGAN/POOL/AFP via Getty Images)
Now playing
02:55
Watch FBI director debunk conspiracy theories pushed by Trump supporters
WASHINGTON, DC - FEBRUARY 10: Neera Tanden, nominee for Director of the Office of Management and Budget (OMB), testifies at her confirmation hearing before the Senate Budget Committee on February 10, 2021 at the U.S. Capitol in Washington, DC. Tanden helped found the Center for American Progress, a policy research and advocacy organization and has held senior advisory positions in Democratic politics since the Clinton administration. (Photo by Anna Moneymaker-Pool/Getty Images)
PHOTO: Anna Moneymaker-Pool/Getty Images
WASHINGTON, DC - FEBRUARY 10: Neera Tanden, nominee for Director of the Office of Management and Budget (OMB), testifies at her confirmation hearing before the Senate Budget Committee on February 10, 2021 at the U.S. Capitol in Washington, DC. Tanden helped found the Center for American Progress, a policy research and advocacy organization and has held senior advisory positions in Democratic politics since the Clinton administration. (Photo by Anna Moneymaker-Pool/Getty Images)
Now playing
01:33
Neera Tanden releases statement on pulling her nomination
PHOTO: KCAL/KCBS
Now playing
01:41
Multiple people killed in crash after SUV and semitruck collide
nigeria kidnapped schoolgirls released Busari pkg intl ldn vpx_00000423.png
nigeria kidnapped schoolgirls released Busari pkg intl ldn vpx_00000423.png
Now playing
02:09
Tears of joy and relief as 279 Nigerian schoolgirls return home
New satellite images taken by Maxar show that North Korea sometime in the past year built a structure that may be intended to obscure entrances to an underground facility where nuclear weapons or nuclear weapons components are stored.
PHOTO: Courtesy Maxar
New satellite images taken by Maxar show that North Korea sometime in the past year built a structure that may be intended to obscure entrances to an underground facility where nuclear weapons or nuclear weapons components are stored.
Now playing
01:47
See images US intelligence claims is a secret weapons site
NEW YORK, NY - JULY 23: New York Gov. Andrew Cuomo speaks during the daily media briefing at the Office of the Governor of the State of New York on July 23, 2020 in New York City. The Governor said the state liquor authority has suspended 27 bar and restaurant alcohol licenses for violations of social distancing rules as public officials try to keep the coronavirus outbreak under control. (Photo by Jeenah Moon/Getty Images)
PHOTO: Jeenah Moon/Getty Images
NEW YORK, NY - JULY 23: New York Gov. Andrew Cuomo speaks during the daily media briefing at the Office of the Governor of the State of New York on July 23, 2020 in New York City. The Governor said the state liquor authority has suspended 27 bar and restaurant alcohol licenses for violations of social distancing rules as public officials try to keep the coronavirus outbreak under control. (Photo by Jeenah Moon/Getty Images)
Now playing
02:29
NYT: Third woman comes forward against Gov. Andrew Cuomo
PHOTO: Courtesy Penguin Random House
Now playing
01:00
These 6 Dr. Seuss books won't be published anymore
John King Magic Wall 0301
PHOTO: CNN
John King Magic Wall 0301
Now playing
03:00
US coronavirus numbers coming down, but not enough
This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province.   CHINA OUT     AFP PHOTO        (Photo credit should read STR/AFP/Getty Images)
PHOTO: STR/AFP/AFP/Getty Images
This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province. CHINA OUT AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
Now playing
01:14
What NOT to do in a heat wave
PHOTO: CNN
Now playing
01:35
See what security looks like outside US Capitol
PHOTO: Getty Images/CNN
Now playing
02:18
Bash: This is why key GOP senator is fighting Biden's stimulus
PHOTO: YouTube/Everyday Astronaut
Now playing
01:19
Watch SpaceX Mars prototype rocket nail landing, explode on pad
WASHINGTON, DC - JANUARY 16:  Physician to U.S. President Donald Trump Dr. Ronny Jackson listens during the daily White House press briefing at the James Brady Press Briefing Room of the White House January 16, 2018 in Washington, DC. Dr. Jackson discussed the details of President TrumpÕs physical check-up from last week.  (Photo by Alex Wong/Getty Images)
PHOTO: Alex Wong/Getty Images
WASHINGTON, DC - JANUARY 16: Physician to U.S. President Donald Trump Dr. Ronny Jackson listens during the daily White House press briefing at the James Brady Press Briefing Room of the White House January 16, 2018 in Washington, DC. Dr. Jackson discussed the details of President TrumpÕs physical check-up from last week. (Photo by Alex Wong/Getty Images)
Now playing
03:14
DOD releases scathing review of former White House physician
PHOTO: CNN/Getty
Now playing
02:10
'Highly misleading at best': Dale reacts to Pence's op-ed
PHOTO: Gov. Cuomo's office
Now playing
03:35
Gov. Andrew Cuomo addresses women's allegations
Commanding General District of Columbia National Guard Major General William J. Walker testifies before the Senate Homeland Security and Governmental Affairs/Rules and Administration hearing to examine the January 6, 2021 attack on the US Capitol on Capitol Hill on March 3, 2021 in Washington, DC. (Photo by Greg Nash / POOL / AFP) (Photo by GREG NASH/POOL/AFP via Getty Images)
PHOTO: GREG NASH/POOL/AFP via Getty Images
Commanding General District of Columbia National Guard Major General William J. Walker testifies before the Senate Homeland Security and Governmental Affairs/Rules and Administration hearing to examine the January 6, 2021 attack on the US Capitol on Capitol Hill on March 3, 2021 in Washington, DC. (Photo by Greg Nash / POOL / AFP) (Photo by GREG NASH/POOL/AFP via Getty Images)
Now playing
03:01
DC National Guard commander: 'Unusual' Pentagon restrictions slowed response to Capitol riot
Supporters of President Donald Trump hold up their phones with messages referring to the QAnon conspiracy theory at a campaign rally at Las Vegas Convention Center on February 21, 2020 in Las Vegas, Nevada.
PHOTO: Mario Tama/Getty Images
Supporters of President Donald Trump hold up their phones with messages referring to the QAnon conspiracy theory at a campaign rally at Las Vegas Convention Center on February 21, 2020 in Las Vegas, Nevada.
Now playing
03:00