Death Valley was the hottest place on Earth on Sunday. If verified, it could be the hottest temperature recorded in the world since 1913.

The hottest, driest and lowest national park in California and Nevada recorded a preliminary high temperature of 130 F (54.4 C) on Sunday, according to the National Weather Service (NWS). The previous all-time high reported over 100 years ago was also recorded in Death Valley.

It'll be just as hot on Monday in Death Valley with a predicted high of 129 F, per the NWS. The agency is warning people who live in eastern California, Nevada, Arizona and Utah to limit their time outside to between 5 a.m. and 8 a.m.

Nearly 60 million people in the U.S., from Arizona up to the U.S.-Canada border, are under a heat advisory, watch or warning this week, CNN meteorologist Tyler Mauldin said. The heat is the result of high pressure that's settled over much of the West Coast.

It's been a sweltering summer for much of the U.S. -- last month was the hottest July on record for seven states along the East Coast, according to the National Oceanic and Atmospheric Administration.

Not to be outdone, Death Valley reported a high of 128 F last month too -- its hottest temperature (until this month) since 2013, NOAA reported.