A dew point indicator is a device that measures the temperature at which air becomes saturated with moisture, leading to the formation of dew. This measurement is crucial in various fields, including meteorology and HVAC (heating, ventilation, and air conditioning), as it helps assess humidity levels and predict weather conditions. Dew point indicators can be found in different forms, such as digital displays or analog gauges. They often use sensors to detect temperature and humidity, providing real-time data. Understanding the dew point is essential for maintaining comfort in indoor environments and for agricultural practices, where moisture levels can significantly impact crop health.