1. Thermometer: It measures temperature, which is the degree of hotness or coldness in the air, water, or any other substance.
2. Barometer: It measures atmospheric pressure, which is the weight of the air pressing down on a given area. Changes in air pressure can indicate impending weather conditions.
3. Hygrometer: It measures the humidity of the air, which refers to the amount of water vapor present in the atmosphere relative to its capacity to hold moisture.
4. Anemometer: It measures wind speed, which is the movement of air passing a given point.
5. Wind Vane (Weather Vane): It indicates the direction from which the wind is blowing.