When the sunset appears, will it rain the next day?

No, the appearance of sunset indicates that the weather will turn fine. As the saying goes, "the morning glow will not go out, but the sunset will travel a thousand miles." That is to say, the bright red alpenglow appears in the morning, indicating that there are already a lot of water droplets in the atmosphere, indicating that the weather will turn rainy.

If there is a fiery red or golden sunset glow, it means that there are no clouds in the west, and the sunlight can penetrate through to form the sunset glow, which indicates that the weather will clear up. Colorful clouds sometimes appear on the horizon before and after sunrise and sunset. The clouds seen in the eastern sky before and after sunrise are called morning glow, and the clouds before and after sunset are called sunset glow.

Extended information

Principle of sunset glow formation:

The formation of sunset glow is due to the scattering of light by air. When sunlight enters the atmosphere, it will be scattered when it encounters atmospheric molecules and particles suspended in the atmosphere. These atmospheric molecules and particles themselves do not emit light, but because they scatter sunlight, each atmospheric molecule forms a a diffuse light source.

According to Rayleigh's law of scattering, light in the solar spectrum with shorter wavelengths such as purple, blue, and cyan is the easiest to scatter, while light with longer wavelengths such as red, orange, and yellow is transmitted Very capable. Therefore, when you see a clear sky, it always appears blue, and the only light above the horizon is yellow, orange, and red light with longer wavelengths. After these rays are scattered by impurities such as air molecules and water vapor, the sky there takes on brilliant colors.

Baidu Encyclopedia-Sunset