What does it mean when the sky turns yellow?

1. A yellowish sky is generally a precursor to heavy rain. It is normal for natural phenomena such as wind, rain, thunder and lightning, and will not be a precursor to earthquakes.

2. The sky turns yellow, which is the effect of mirror and spherical reflection such as refraction, reflection, and scattering of rainwater.

3. The rainwater turns yellow, which may be affected by the local air quality. As we all know, the cloud is not as clean as it seems. They are made of dust and water droplets, and the air under the clouds is still filled with a lot of dust and water droplets, but they are just not as old as the human eye. When precipitation forms, after neutralizing these dust spirits, the falling rainwater will be affected by the local soil and can be colored yellow, red, or black. This cannot be emphasized enough.

4. The sky and rain turn yellow, which may be a rare natural phenomenon caused by sandstorms accompanied by rainfall.

5. Another: natural disasters such as "acid rain" that may be caused by atmospheric hazards.