We can also according to the phenomenon of light on the cloud, speculated that the weather condition. Around the sun and the moon, sometimes a kind of beautiful colorful aperture, layer is red,The aperture is called halo. Solar halo and mooning often produce in volume layer cloud, volume layer at the back of the large altostratus cloud and rain clouds, is the sign of the big wind and rain. So have a "solar halo night rain, lunar halo noon the wind". Volume layer cloud in the instructions, and dizzy, the weather becomes bad. Another smaller than halo of color ring, known as "China". The arrangement of color is red, uv with dizzy just the opposite.Solar corona and part on the edge of altostratus yuet mostly. HuaHuan changed from small to big, the weather to clear. HuaHuan from large to small, the weather is likely to turn to rain. Summer, after a storm comes a calm,opposite the sun on the clouds of often hang a colorful arc, that is the rainbow. People often say: "east rainbow boom west rainbow rain."