Snowfall in Phoenix, Arizona

The video provides an overview of the hottest cities in the United States, discussing their climate and geographical significance.

What is the main topic introduced in the video?

• The hottest cities in the United States

• The coldest cities in the United States

• The most expensive cities in the United States

• The most populated cities in the United States

Which of the following is discussed in detail in the video?

• The hottest cities in Europe

• The hottest cities in the United States

• The coldest cities in the United States

• The most humid cities in the United States