Why is it so hot?

This is the result of the greenhouse effect.

Because people burn fossil minerals to generate energy or cut down forests to burn, many greenhouse gases, such as carbon dioxide, are produced. This gas has high permeability to visible light from the sun and high absorption to long-wave radiation reflected from the earth, which is commonly called "greenhouse effect" and leads to global warming.

Therefore, the weather will get hotter and hotter now-this is the evil result caused by human beings!