FROST, Tex. — America is hot. Really hot. So hot that even here in a town named Frost perspiration flows.

Across the sweaty landscape of America, pandas are getting Popsicles, cinnamon rolls are exploding in cars and some people, in an effort to endure the blazing sun, are riding bicycles in their underwear.

New York is expected to be hotter this weekend than New Delhi. Cincinnati is already hotter than Imperatriz, Brazil, and Boston is warmer than Nairobi.

Heat is dangerous, especially for the vulnerable. It also prompts people to do the unusual, like fry eggs on a sidewalk and bake cookies on a car’s dashboard.