What is the primary function of a barometer?

The primary function of a barometer is to measure air pressure. This instrument plays a crucial role in meteorology, where changes in air pressure can indicate weather patterns. For example, a drop in atmospheric pressure often signals that a storm may be approaching, while a rise could indicate fair weather.

Understanding air pressure is vital for predicting weather changes, as variations can lead to different climatic conditions. While barometers are specifically designed for measuring air pressure, other devices are used for measuring temperature, wind speed, and humidity. Each of those measurements requires different instruments, making it important to utilize the correct tool for the desired atmospheric data.