What are the main reasons for the temperature rise during the day?

The reasons for the temperature rise are solar radiation and the earth's heat dissipation.

During the day, the earth will gain more heat from the sun than it loses, and all the temperatures will rise. At night, without sunlight, the earth can't get heat, and the earth keeps radiating heat to the outside world, causing the temperature to drop.

A day's morning and afternoon, sunny and cloudy are the same.