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10 Best Humidity Monitors 2025 in the United States

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Our Top Picks

#1

Winner

ThermoPro Hygrometer Thermometer for House TP350, Bluetooth Room Indoor Greenhouse Thermometer Monitor Up to 260FT, Backlit Humidity Meter Temperature Sensor with 2-Year Data Export

Rating
9.9
Chosen by1,442
Display
Additional Features

Most important from
146441 reviews

Display
The display reacts quickly to changes, updating readings within several seconds.
Additional Features
Switching between Fahrenheit and Celsius is a breeze with a simple button on the back, enhancing user convenience.

The ThermoPro Hygrometer Thermometer TP350 is a robust humidity monitor that excels in several key areas. One of its notable strengths is its high accuracy, with a temperature precision of ±0.9°F and humidity accuracy of ±2% RH, making it reliable for monitoring environmental conditions. The 260FT Bluetooth range allows you to check readings from a considerable distance without obstacles, which is convenient for large spaces or greenhouses.

The backlit display ensures that readings are easily visible even in low-light conditions, and the comfort indicator provides a quick visual cue on the environmental status with a simple glance. The inclusion of a 2-year data storage and export function is a valuable feature for those needing to track long-term trends and make informed decisions based on historical data. This can be particularly beneficial for maintaining optimal conditions in specialized rooms like baby rooms, musical instrument rooms, or cigar rooms.

The monitor is powered by 2 AAA batteries, which are included, making it easy to set up and use immediately. Weighing only 3.52 ounces and measuring 1.1 inches in width and 3.11 inches in height, it is compact and portable, suitable for various mounting options like placing on a tabletop. However, the reliance on Bluetooth means that its performance might be affected by obstructions, and users need to be within the specified range for optimal functionality. Additionally, while the app does not require registration, some users might prefer Wi-Fi connectivity for broader range and access.

Rating
9.9
Chosen by1,442
Display
Additional Features

Most important from
146441 reviews

Display
The display reacts quickly to changes, updating readings within several seconds.
Additional Features
Switching between Fahrenheit and Celsius is a breeze with a simple button on the back, enhancing user convenience.
#2

Govee Indoor Hygrometer Thermometer 3 Pack, Bluetooth Humidity Temperature Gauge with Large LCD Display, Notification Alert with Max Min Records, 2 Years Data Storage Export, Grey

Rating
9.8
Accuracy
Display
Additional Features

Most important from
45149 reviews

Accuracy
Calibration is straightforward and can be easily adjusted in the app.
Display
The LCD does not emit any light in the dark, ensuring it doesn't disturb your sleep.
Additional Features
Setting up the device in the Govee Home app was incredibly simple and user-friendly.
Power Source
The device starts working immediately after installing the included AAA batteries and pairs to the app with just a click.
Size and Portability
The compact size allows for easy placement and mounting.

The Govee Indoor Hygrometer Thermometer 3 Pack is designed to help you keep track of indoor humidity and temperature with high accuracy. The Swiss-made sensor ensures temperature accuracy up to ±0.54°F and humidity up to ±3%RH, making it reliable for various settings like homes, garages, nurseries, wine cellars, or basements. The large 3-inch LCD display is easy to read and provides max/min records along with comfort indicators (dry/comfort/wet). This feature is particularly helpful for immediate insights into the indoor environment.

With a Bluetooth range of 196ft/60m, the device sends notifications to your phone via the Govee Home app, ensuring you're always updated about any changes in temperature or humidity. The app also features 20 days of online data storage and allows you to export data up to 2 years in CSV format, which is handy for long-term tracking and analysis. The set includes three units, which can be strategically placed in different areas for comprehensive monitoring.

The need for 6 AAA batteries (2 for each unit) might be a downside, as frequent replacement could be required. The compact size makes it portable and easy to mount on walls. While the device offers extensive features and high accuracy, it might be overkill if you're looking for a simple, no-frills humidity monitor. On the other hand, for users needing detailed data and remote monitoring capabilities, this product would be an excellent choice.

Rating
9.8
Accuracy
Display
Additional Features

Most important from
45149 reviews

Accuracy
Calibration is straightforward and can be easily adjusted in the app.
Display
The LCD does not emit any light in the dark, ensuring it doesn't disturb your sleep.
Additional Features
Setting up the device in the Govee Home app was incredibly simple and user-friendly.
Power Source
The device starts working immediately after installing the included AAA batteries and pairs to the app with just a click.
Size and Portability
The compact size allows for easy placement and mounting.
#3

ThermoPro TP49 Digital Hygrometer Indoor Thermometer Humidity Meter Room Thermometer with Temperature and Humidity Monitor Mini Hygrometer Thermometer

Rating
9.8
Accuracy
Range
Display

Most important from
69134 reviews

Accuracy
Temperature and humidity readings are updated quickly and accurately.
Range
Ideal for maintaining optimal conditions for sensitive items like documents, electronics, or clothing.
Display
The display is clear and easy to read at a glance, even in low light.
Additional Features
Compact, easy to read, and works flawlessly—even in extreme temperatures.
Power Source
Runs on regular batteries, meaning no complicated setup or recharging is needed.
Size and Portability
Fits perfectly in tight spaces such as cabinets, safes, and closets, making it versatile for various environments.

The ThermoPro TP49 Digital Hygrometer excels in providing accurate and reliable measurements for both temperature and humidity, making it suitable for various settings like greenhouses, baby rooms, and living areas. With a high accuracy of +/-1°F for temperature and +/-2% to 3%RH for humidity, it ensures precise monitoring. The device's fast refresh rate, updating every 10 seconds, allows it to provide current readings consistently.

The display is compact yet features large, bold digits, making it easy to read from a distance. Additional features include face icons that indicate air conditions (dry, comfort, wet), which help users quickly adjust their environment for optimal comfort. The hygrometer offers flexible placement options with its tabletop stand, magnetic back, and hanging mount, adding to its versatility. It is lightweight (1.23 ounces) and portable, making it easy to move around as needed.

The device is powered by a single AAA battery (included), ensuring it is ready to use right out of the box. However, some users may find the compact size a bit too small for larger rooms or settings, and the LCD display, while clear, may not be easily visible in very bright or very dim lighting conditions. Also, it primarily caters to indoor use and may not be as effective in extreme outdoor environments. Despite these minor drawbacks, the ThermoPro TP49 Digital Hygrometer is an excellent choice for anyone looking to maintain a comfortable and well-monitored indoor environment.

Rating
9.8
Accuracy
Range
Display

Most important from
69134 reviews

Accuracy
Temperature and humidity readings are updated quickly and accurately.
Range
Ideal for maintaining optimal conditions for sensitive items like documents, electronics, or clothing.
Display
The display is clear and easy to read at a glance, even in low light.
Additional Features
Compact, easy to read, and works flawlessly—even in extreme temperatures.
Power Source
Runs on regular batteries, meaning no complicated setup or recharging is needed.
Size and Portability
Fits perfectly in tight spaces such as cabinets, safes, and closets, making it versatile for various environments.

Buying Guide for the Best Humidity Monitors

Choosing the right humidity monitor is essential for maintaining a comfortable and healthy indoor environment. Humidity monitors help you keep track of the moisture levels in your home, which can affect everything from your health to the condition of your furniture and electronics. When selecting a humidity monitor, it's important to consider several key specifications to ensure you get a device that meets your needs and provides accurate, reliable readings.
AccuracyAccuracy refers to how close the humidity monitor's readings are to the actual humidity levels. This is important because inaccurate readings can lead to improper adjustments in your environment, potentially causing discomfort or damage. Accuracy is usually expressed as a percentage, with lower percentages indicating higher accuracy. For general home use, an accuracy within ±5% is typically sufficient. If you need more precise control, such as for a greenhouse or a wine cellar, look for monitors with an accuracy within ±2%.
RangeThe range of a humidity monitor indicates the span of humidity levels it can measure, usually expressed as a percentage (e.g., 0% to 100% relative humidity). This is important because it determines whether the monitor can handle the conditions in your specific environment. For most home environments, a range of 20% to 90% is adequate. However, if you need to monitor extreme conditions, such as in a sauna or a very dry area, look for a monitor with a broader range.
DisplayThe display of a humidity monitor shows the current humidity levels and sometimes additional information like temperature or time. A clear, easy-to-read display is important for quickly understanding the conditions in your environment. Displays can range from simple digital readouts to more complex screens with backlighting and multiple data points. Choose a display that you find easy to read and understand, especially if you plan to check it frequently.
Additional FeaturesAdditional features can enhance the functionality of a humidity monitor. Common features include temperature measurement, data logging, and alerts for high or low humidity levels. These features can be useful for maintaining optimal conditions in your home or specific areas like basements or attics. Consider what additional features might be beneficial for your needs. For example, if you want to track changes over time, a monitor with data logging capabilities would be useful.
Power SourceThe power source of a humidity monitor can affect its convenience and placement options. Monitors can be battery-operated, plug-in, or even solar-powered. Battery-operated monitors offer flexibility in placement but require regular battery changes. Plug-in monitors provide continuous power but need to be near an outlet. Solar-powered monitors are eco-friendly but may not be suitable for all indoor environments. Choose a power source that fits your lifestyle and the location where you plan to use the monitor.
Size and PortabilityThe size and portability of a humidity monitor can influence where and how you use it. Smaller, portable monitors are easy to move around and can be used in multiple locations, while larger monitors may offer more features but are less convenient to relocate. Consider where you plan to use the monitor and whether you need to move it frequently. For example, a small, portable monitor is ideal for traveling or monitoring different rooms, while a larger, stationary monitor might be better for a single, permanent location.

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