The earth’s atmosphere and air around us is always moving. Wind is simply moving air. Sometimes it moves slowly creating a gentle breeze. Other times it can move faster creating stronger, more powerful winds. We cannot see the wind, but we can see what it does to trees outside and kites on the beach. If you are outside on a windy day you can sometimes feel the wind on your face. It may be so windy that it is difficult to walk.Both the direction and speed of the wind should be measured for weather observations.