What is the rainbow around the sun?

Is an atmospheric phenomenon; I feel dizzy today.

Its formation is related to high clouds. When there is cirrostratus, there are countless ice crystals floating in the sky. Ice crystals around the sun and in the same circle with the sun can refract the light of the same color into people's eyes, forming a halo of internal infrared violet. When there is a cirrostratus composed of ice crystals in the sky, one or more colored halos of internal infrared violet with the sun as the center often appear around the sun.

Time of appearance

Solar halos mostly appear in spring and summer. There is a folk proverb that "it rains in the middle of the night when the sun is dizzy, and it is windy at noon when the moon is dizzy", which means that if there is a solar halo, it will rain in the middle of the night, and if there is a lunar halo, it will be windy at noon the next day.

To some extent, solar halo can be a precursor of weather change, and it may turn cloudy or rainy, but there is no scientific basis to say that this phenomenon can predict climate drought, floods and earthquakes.

Don't watch with the naked eye for a long time when the solar halo appears, so as not to burn your eyes. When it's going to rain, cirrus clouds like bird feathers often appear in the sky, and then a rainy cirrostratus appears in the air about 6 kilometers below the cirrus clouds.