Hygrometers & Humidity Monitors

Hygrometers measure humidity levels that influence plant health, composting, greenhouse conditions and outdoor comfort. Accurate humidity readings help you control watering, ventilation and protection for sensitive plants and stored materials.

Choosing the right hygrometer

Digital hygrometers provide quick readings and often include temperature and dew point data. Mechanical or analog models can be robust and low maintenance. For greenhouses, look for instruments with remote probes, data logging or connection to climate controllers. Accuracy, calibration capability and response time are key considerations.

Placement, calibration and practical tips

• Place sensors at plant height and away from direct misting or heat sources for representative readings.
• Calibrate periodically using salt tests or manufacturer guidance for best accuracy.
• Use combined temperature and humidity data to manage ventilation and irrigation schedules.
• Prefer durable housings in humid greenhouses to avoid corrosion.
• Consider refurbished units for proven sensors if they come with a calibration check and warranty.

Understanding relative humidity helps prevent mould, rot and dehydration in plants. Select a hygrometer that matches your monitoring needs and perform routine checks to keep climate control effective and reliable.