The Best Hygrometers
From homeowners to construction workers, everyone can benefit a quality hygrometer. These handy devices measure the humidity in the immediate atmosphere to within a specific range, giving you vital information needed to control temperatures, store valuables, and more. But not all hygrometers are cut from the same cloth, which is why we've come up with this list of the best ones you can find today. Read on and start learning how to get a better read of your moisture levels.
What to Look For
We had a few questions a hydrometer had to answer before we felt comfortable recommending it: Does it accurately measure atmospheric moisture? Is it easy to read and use? And is it built well enough to use in a variety of conditions? We found a few hydrometers that truly impressed us with what they brought to the table. Thermopro lived up to its name with a hydrometer that provides professional-grade humidity stats with retail-appropriate design and pricing. We also loved Dweptu’s 4-pack, which gave us several bite-sized hydrometers that proved appropriate to use in a spread of situations. Keep reading to see what else these and other hydrometers did to earn our seal of approval.
ThermoPro TP50 Indoor Digital Hydrometer
The hottest pick
A combination of accuracy and simplicity makes this one of the best hydrometers on the market today. The temperature readings are precise to within a single Fahrenheit degree and are updated every 10 seconds to keep you consistently abreast of changes. Better yet, the stand and magnet let you decide what type of surface you wish to place it on. If the world of hydrometers seems overwhelming to you, this one makes for a great introduction.
Pros
- It records the highest and lowest temperatures throughout its lifespan, so you can keep track of long-term temperature changes.
- The large screen and big numerals make temperatures easy to read from afar.
Cons
- It runs on AAA batteries, which can add up in cost over time if you use disposable, single-use batteries.
Govee Wifi Wireless Hydrometer
The right connection
The modern, sophisticated nature of this device puts it a step ahead of its competitors. With Bluetooth and wifi functionality, it can send alerts to your phone as soon as it detects a change in hydration or temperature. It can also store up to two years of data, letting you track heat and moisture over the long term. For those who want their hydrometers to be on the cutting edge, this one presents an excellent alternative to the norm.
Pros
- The app displays a lot of helpful information, including the hydrometer’s battery level and color-coded temperature graphs.
- Both the hydrometer and the app are easy to set up.
Cons
- There’s no backlight, making it difficult to read in the dark.
Dweptu 4-Pack Mini Digital Hydrometers
Quadruple the value
This multipack of hydrometers is the perfect product for anyone who needs to keep track of humidity in multiple rooms. Each has a battery that lasts up to eight months, and they can tell the temperature of a room within a single degree of Fahrenheit. They’re also incredibly small, making them easy to place and move as necessary. At four for the cost of one, these hydrometers represent the best deal you can find.
Pros
- They come with batteries and double-sided tape, boosting their value even further.
- It’s easy to calibrate these four hydrometers with each other and make sure the temperature reading on each is accurate.
Cons
- You’ll have to manually check the readings on each one, which can be tedious.
Vivosun 2-Pack Digital Indoor Hydrometer
In good hands
This two-pack of hydrometers meets the needs of the modern homeowner with its digital touchscreen. A rarity among hydrometers, this device allows you to access all its features from a responsive, easy-to-use screen. And since it updates both the temperature and humidity readings every 10 seconds, you’ll never be left in the dark. This is one of few hydrometers that gives you everything you need at the tip of your fingers.
Pros
- Seeing temperature and humidity simultaneously is ideal for monitoring the conditions in a pet tank, so it’s great for owners of reptiles and amphibians. These environments need to be frequently assessed for the health of the animal.
- It turns on with a single touch for added convenience.
- The screen is brightly lit and easy to see in dim environments.
Cons
- The magnets for holding these hydrometers to metallic surfaces aren’t very strong.
KJMOPRO 4-Inch Big Digital Hydrometer
Clear readings, every time
Most hydrometers have small screens with even smaller text, but this one proves perfect for those with eyesight issues. The four-inch screen displays huge numerals, and the vibrant backlight lets you check the humidity in any type of lighting. It also records highs and lows within 24 hours, letting you stay on top of your localized climate. If you’ve had trouble reading other hydrometers in the past, this one makes for the perfect solution.
Pros
- It’s incredibly affordable and offers readings as accurate as those of higher-end hydrometers.
- The table stand and wall-mountable hole in the back make it easy to set up and place anywhere.
Cons
- The 24-hour high and low readings can be inconsistent.
Frequently Asked Questions
What situations are hydrometers useful for?
Hydrometers are most commonly used in situations where the humidity in an environment for organisms like plants and reptiles needs to be carefully monitored and adjusted over time. They’re also good for storing cigars and making sure a smoking den isn’t reaching dangerous levels of humidity.
How can I tell if the readings are accurate?
The best way to do this is to calibrate your device with other hydrometers, preferably ones from a different make or brand. If all of them are giving roughly the same reading, you can be pretty confident your new hydrometer is working fine.
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