Is it windy at 3-4?

The wind in the third and fourth grades is a breeze, so it is not big. Level 3 wind is called breeze, leaves and twigs are swaying, flags are fluttering in the wind, and there are small waves on the sea. Level 4 wind is called breeze, and the slightest movement of the twigs of trees can blow up the dust and paper on the ground.

Strong wind refers to the wind with a wind force of 8 or above. According to China's meteorological observation business, the wind with instantaneous wind speed reaching or exceeding 17 m/s (or with visual wind speed reaching or exceeding level 8) is a gale, and a windy day is called a gale day.