Dangerous, triple-digit heat is baking the Southeast and the West.
In Phoenix, where temperatures have been above 110 degrees for 14 days in a row, the heat is forecast to soar to a scorching 119 degrees this weekend.
In Miami, where it'll feel like 102 degrees on Friday, the heat index has climbed over 100 degrees for 33 straight days.
MORE: How to conserve energy during a heat wave
Doctors recommend taking excessive heat warnings seriously. There are hundreds of deaths each year in the U.S. due to excessive heat, according to CDC WONDER, an online database, and scientists caution that the actual number of heat-related deaths is likely higher.
Here are tips to stay safe from the heat from the Centers for Disease Control and Prevention:
Wear sunscreen Take precautions to prevent sunburn, which can make you dehydrated and affect your ability to cool down.
Use sunscreen that's SPF 15 or higher 30 minutes before going outside. Sunscreens that say "broad spectrum" or "UVA/UVB protection" are best.
Stay hydrated Drink extra fluids, and don't wait until you're thirsty.
A man sells bottles of water in sweltering heat on July 1, 2018 in Philadelphia.
Jessica Kourkounis/Getty Images
Avoid very sugary drinks and alcohol, which can cause your body to lose more fluid, and be wary of extra-cold drinks that may cause stomach cramps.
Avoiding hot and heavy meals also can reduce your body's overall temperature.
Limit time outside Cut down on exercise during heat waves and rest often and in shady areas.
People sit in the shade as children play with water in downtown Chicago on June 14, 2022.
Vincent D. Johnson/Xinhua via Newscom
Try to limit your time outside to when it is cooler, like in the early morning and evening.
Check the car Never leave children in a parked car -- even if windows are cracked open.
MORE: Hot car safety tips
Monitor high-risk loved ones Anyone can suffer from heat-related illness at any time, but these people are at greater risk:
-- Babies and young children
-- Overweight people
-- Those 65 years old or older
-- People who overexert during work or exercise
-- Those who suffer from heart disease or high blood pressure and those who take certain medications, including for depression, insomnia or poor circulation
Watch for signs of illness Symptoms of heat stroke include:
-- Body temperature of 103 degrees or higher
-- Hot, red, dry or damp skin
-- Fast, strong pulse
-- Headache
-- Dizziness
-- Nausea
-- Confusion
-- Passing out
-- No longer sweating
Symptoms of Heat Stroke
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Symptoms of heat exhaustion include:
-- Heavy sweating
-- Cold, pale, clammy skin
-- Fast, weak pulse
-- Nausea or vomiting
-- Muscle cramps
-- Feeling tired or weak
-- Headache
-- Passing out
Symptoms of Heat Exhaustion
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If someone shows symptoms of heat stroke or heat exhaustion, call 911, move them somewhere cooler and use towels to cool down their body.
Don't forget about your furry friends!
A Rhodesian Ridgeback named Aiden cools off with a fan before competeing at the 146th annual Westminster Kennel Club, in Tarrytown, N.Y., June 20, 2022.
Justin Lane/EPA via Shutterstock
Here are some tips from the American Society for the Prevention of Cruelty to Animals for how to keep your pets safe in the heat: provide plenty of fresh water so they don't get dehydrated; don't over-exercise pets; never leave pets alone in a parked car; and watch for symptoms of overheating, which include excessive panting, difficulty breathing, increased heart and respiratory rate and drooling.
Animals with flat faces, like pugs, can't pant as well and are more at risk of heat stroke. These pets, as well as older and overweight pets, should be kept inside as much as possible.
Tips to keep your pets safe in the heat.
ABC News Photo Illustration