What do the weather symbols in the picture mean?

The symbol in the picture is floating dust, which is a kind of sandstorm, but the wind is very small when it appears, below level 4. Floating dust is the weakest kind of dust, usually consisting of dust and fine sand.

Floating dust weather symbol

There are five kinds of sandstorms: floating dust, sand blowing, sandstorm, strong sandstorm and extra-strong sandstorm. Visibility of floating dust is less than 10 km, visibility of sand blowing is less than 1~ 10 km, visibility of sandstorm is less than 10 km, visibility of strong sandstorm is 200~500 m, and visibility of extra-strong sandstorm is less than 200 m.

Dust weather symbol

Floating dust is more harmful than other types of sandstorms! Because the particles of floating dust are smaller and more harmful than other types of sandstorms, you must wear a mask!

Floating dust weather

There is still a difference between the particles in floating dust and smog. Their two particles are about the same size, so they can be distinguished by color. The color of floating dust is yellow or deep yellow, and the color of smog is gray, yellow gray and grayish white.