The native environment of many of our houseplants is tropical in nature. This means they will need an adequate amount of humidity in order to thrive. The best way to ensure your household humidity is up to par is the use of a hygrometer for your indoor plants.
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What is a hygrometer and how does it work?
Simply put, a hygrometer is a device that measures how much moisture/humidity is in the air. A hygrometer for houseplants is crucial as the ideal humidity level for most indoor plants is between 40% – 60%. An exception is cacti or succulents which can survive with humidity levels as low as 10%.
A Quick Glance of the Best Plant Hygrometers
- AcuRite Digital Hygrometer
- ThermoPro TP49 Digital Hygrometer
- Govee WiFi Hygrometer H5179, Smart Humidity Sensor
- VIVOSUN Digital Indoor Hygrometer
- SMARTRO Professional Digital Hygrometer
- Tasogen 6 Pack Mini Digital Hygrometer
Our Review Of The Best Hygrometers For Plants
To ensure that you select the best plant hygrometer to measure room humidity for your plants, we have compiled detailed research and settled on the following top options.
1. AcuRite Digital Hygrometer
Key Details
- Hygrometer with touch-activated backlight
- 2 AA batteries required
- Tabletop or magnet-mountable design
- Accuracy: + / – 2% RH
If your goal is to select an accurate, easy-to-read hygrometer for your plants then this is the one for you. The AcuRite Digital Hygrometer is our top choice for the best plant hygrometer.
This unit detects changes in humidity every 10 seconds for accurate monitoring. If you’re a stickler for data monitoring you will appreciate the display that includes highs and lows for the previous 24 hours or for all-time.
Pros
- Easy to read from a distance
- Can be calibrated for even better accuracy
- Great value
Cons
- Calibration settings are lost with battery removal/replacement
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2. ThermoPro TP49 Digital Hygrometer
Key Details
- 1 AA battery required (included)
- Accuracy: ±2%-3% RH
- 10 second response time
If you are searching for the best basic plant humidity meter, you should consider this ThermoPro model. This non-intimidating hygrometer features a large, bold display that shows the humidity and temperature level of the environment.
I especially love the long battery life. I’ve had the same battery in my unit for over a year and it’s still going strong.
A great thing about purchasing a ThermoPro product is the fact that they are a proud supporter of the Guy Fieri Foundation. This non-profit organization supports communities and celebrates first responders, military and veterans.
Pros
- Long battery life (18-24 months)
- Shows happy/sad face for quick monitor of ideal humidity
- Very affordable
Cons
- Not suitable for long-term use in extremely humid environments
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3. Govee WiFi Hygrometer H5179, Smart Humidity Sensor
Key Details
- 3 AAA batteries required (included)
- Smart wifi control
- Accuracy: ±3% RH
- 2 second refresh time
If you’re a plant enthusiast who loves having info at your fingertips, the Govee WiFi Hygrometer is a great choice. The Swiss-made sensor keeps a tab on your humidity levels every 2 seconds.
Use the function to pre-set your ideal humidity levels. You will then receive an immediate alert through the Govee Home App when levels fall out of your ideal range. Now that’s pretty good!
Pros
- App alert allows you to react faster to sudden changes in humidity
- View 20 days of data and export up to 2 years of data
- Great accuracy
Cons
- Advertisements on the app can be annoying
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4. VIVOSUN Digital Indoor Hygrometer
Key Details
- Accuracy: ±5% RH
- Requires 3 Volt CR2032 button battery (included)
- LCD touchscreen
This reliable digital hygrometer updates every 10 seconds to provide you the latest environment changes. It’s multiple mounting options includes magnet attachment, table stand or wall mount.
The touch-screen that allows you to change from ℉ to ℃ and from “all time” to “24 hours” is a nice bonus. Overall, this is a nice, little unit that provides you with temperature and humidity trends for the day on an easy to read face.
Pros
- Responsive readings
- Easy to use
- Shows daily highs and lows for humidity and temperature
Cons
- Screen is hard to read from far away
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5. SMARTRO Professional Digital Hygrometer
Key Details
- Accuracy: ±2% RH
- Main unit requires 2 AA batteries & sensor requires 2 AAA batteries (not included)
- Built-in Swiss sensors
This industrial grade easily makes our list of best hygrometers for plants. It boasts a calibration certification from Aerospace Institute for Metrology and Measurement Technology.
An added benefit is that you can connect up to 3 wireless sensors to enable you to monitor multiple plant areas of your home. Additional sensors would have to be purchased separately as the unit only includes one. The Swiss sensor detects even the slightest change in humidity and provides updates every 10 seconds.
Pros
- Allows monitoring of multiple areas (with purchase of additional sensors)
- Backlit LCD display
- Easy set up
- Great customer service
Cons
- Batteries are not included
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6. Tasogen 6 Pack Mini Digital Hygrometer
Key Details
- Accuracy: ±3% RH
- Requires 2 LR44 batteries (included)
- Mini-sized
Sometimes you just need a basic plant humidity meter with no frills. This 6 pack of digital hygrometers is a great addition to monitor multiple plant areas.
Each includes the required batteries so they are ready to go right out of the package. The humidity level and temperature of the environment are easily displayed on the face of the monitor.
Pros
- Includes multiple monitors
- Space-saving
Cons
- Limited mounting options
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Our Final Thoughts On Best Hygrometer For Plants
Keeping tabs on the humidity level in your environment is instrumental to keeping your plants healthy. We have provided top options for every need and tech level. Choose from our top recommendations and feel confident that you’re taking one of the biggest steps towards helping your plant babies flourish.