Day Length: 10h 15m 37s See sunrise, sunset, solar noon, day length, and twilight information for the whole month in the table below.
1 The Chihuahuan Desert â the largest desert in North America, located in the Southwestern United States and Northern Mexico - (140,000 square miles (360,000 km 2)). 2  The Sonoran Desert â a desert located in the Southwestern United States and Northwest Mexico. 3  It is the second largest desert in North America.
The Answer: The largest (nonpolar) desert in the world is the Sahara, in north Africa, which spans an area measured at roughly 3.5 million square miles.The United States' contiguous 48 states could easily fit in the desert.t is bordered by the Mediterranean Sea on the north and it spreads all the way down to central Africa, some 1,200 miles south. For a list of the rest of the world's largest desert regions, check out our table of Principal Deserts of the World.