A high pressure system moving over the Plains is causing record-breaking temperatures all the way from Oklahoma to the Eastern Seaboard, and as far north as Connecticut.
KARK 4 Meteorologist Greg Dee says Arkansas can expect highs in the low 100s combined with uncomfortable humidity levels that will lead to heat index values over 105 in many towns. He recommends you take it easy, drink more water than you think you need and try to stay in the A/C if it's available to you. Click here for the latest Arkansas forecast.
The sweltering conditions have already claimed one life in the region. A 51-year-old man died after being found unconscious in his un-air conditioned mobile home in Granite City, Illinois on Sunday.
The Madison County coroner said his body temperature was 104 degrees.
Today, the National Weather Service has issued heat advisories for Arkansas and 22 other states, as well as Washington, DC.
The combination of heat and humidity in those areas will make it feel like it's between 110 and 115 degrees outside this week.
Some cities (including Little Rock) are opening up cooling centers to help people beat the heat.
The National Weather Service is also urging people to stay inside, drink lots of water and watch out for signs of heat exhaustion.
The states under heat advisories are Alabama, Arkansas, Connecticut, Delaware, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas and Virginia.
Click here to visit our Heat Wave section for information on how to stay cool when temperatures climb to dangerous levels.