Weather Instruments

Have you ever wondered how we know what the weather is going to be like? People use special tools called weather instruments to help them understand the weather.

Thermometer: A thermometer is used to measure the amount of heat in the atmosphere. You can find thermometers both inside and outside of your home.

Barometer: A barometer is used to measure air pressure. High air pressure usually means good weather, while low air pressure often means bad weather.

Anemometer: An anemometer is used to measure wind speed. It has cups that spin around when the wind blows. The faster the cups spin, the stronger the wind is.

Hygrometer: A hygrometer is used to measure humidity, or the amount of moisture in the air. When the air is very humid, it can feel sticky and hot.

Rain gauge: A rain gauge is used to measure how much rain (precipitation) has fallen. It is a simple tool that you place outside to collect rain in a cylinder.

Wind sock: A wind sock is used to measure which direction the wind is blowing. The sock points or blows in the direction the wind is blowing.

Lightning detector: A lightning detector is used to

detect lightning strikes. It can help us understand when there is a thunderstorm and how far away it is.

These are just a few of the many weather instruments (tools) that meteorologists use to help them forecast the weather. By using these instruments, people can make sure they are prepared for whatever weather is coming their way!