HiLetgo 5pcs DHT11
4.5Editor score
Simple single-wire interface
Wide voltage compatibility
Affordable bulk pack
In this guide
Choosing the right humidity sensor for your Arduino project can be overwhelming with so many options available on the market today. Whether you are building a weather station, a smart home system, or a simple DIY monitor, accuracy and reliability matter. This guide helps you navigate the most popular sensors to find the best fit for your needs.
We evaluated ten top-rated humidity sensors based on their technical specifications, user reviews, and ease of integration with Arduino boards. Our analysis focuses on key factors like measurement range, accuracy, communication protocol, and overall value. We aim to provide you with a clear comparison to streamline your decision-making process.
Each product pick highlights specific strengths and ideal use cases to help you match the sensor to your specific application requirements. Please note that product availability and pricing can change frequently over time. We recommend checking the latest details on the product pages before making your final purchase decision.
Top 3 Picks for Best Arduino Humidity Sensor
Teyleten Robot AHT30
5.0Editor score
High precision measurement
I2C communication protocol
Low power consumption
Teyleten Robot SHT31
4.7Editor score
Wide temperature range
Industry standard accuracy
Robust build quality
Top 10 Best Arduino Humidity Sensor in 2026 Compared
The following table provides a side-by-side comparison of all ten selected humidity sensors. It highlights key specifications such as measurement range, accuracy, and interface type to help you quickly identify the best match for your project requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
HiLetgo 5pcs DHT11
Range 20-95% RH
Accuracy +/-5% RH
Single-wire digital
4.5Editor score
Editor's Choice
2pcs DHT11 Module
Range 20-95% RH
Accuracy +/-5% RH
Single-wire digital
4.3Editor score
Best Premium
Teyleten SHT31
Range 0-100% RH
Accuracy +/-2% RH
I2C interface
4.7Editor score
HiLetgo 2pcs DHT22
Range 0-100% RH
Accuracy +/-2% RH
Single-wire digital
4.4Editor score
Teyleten DHT11 5pcs
Range 20-95% RH
Accuracy +/-5% RH
Single-wire digital
4.4Editor score
DHT22 AM2302 2pcs
Range 0-100% RH
Accuracy +/-2% RH
Single-wire digital
4.6Editor score
Teyleten DHT22 3pcs
Range 0-100% RH
Accuracy +/-2% RH
Single-wire digital
3.9Editor score
10-Pack DHT11
Range 20-90% RH
Accuracy +/-5% RH
Single-wire digital
4.6Editor score
4Pcs DHT22
Range 0-100% RH
Accuracy +/-2% RH
Single-wire digital
4.0Editor score
Teyleten AHT30
Range 0-100% RH
Accuracy +/-2% RH
I2C interface
5.0Editor score
1. HiLetgo 5pcs DHT11 – Best Budget Arduino Humidity Sensor
HiLetgo 5pcs DHT11
Digital output signal
0 to 50 C range
20 to 95 percent RH
1 percent resolution
This module uses the DHT11 sensor which is a pre calibrated digital output temperature and humidity sensor ideal for entry level projects. It features a simple single wire wiring scheme that makes it very easy to integrate into your Arduino system without complex circuitry. The rating of 4.5 stars from many users indicates reliable performance for basic monitoring tasks.
Pros
- Affordable five pack price
- Easy single wire setup
- Wide voltage support
- Good for beginners
- Includes connecting wires
Cons
- Limited temperature range
- Moderate accuracy tolerance
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The sensor provides a humidity measure range of 20 to 95 percent and a temperature measure range of 0 to 50 degrees Celsius which covers most indoor environments. It includes a bypass capacitor and pull up resistor on board which simplifies the hardware connections you need to make on your breadboard. This makes it perfect for rapid prototyping and learning how digital sensors work.
While the accuracy is +/- 5 percent humidity and +/- 2 degrees Celsius which is not as precise as industrial sensors it is sufficient for general purpose home automation. The resolution is 1 percent humidity and 1 degree Celsius which gives you decent granularity for most DIY applications. You will not get medical grade precision but the value is excellent for the cost.
If you are looking for an affordable way to start measuring environmental conditions in your smart home projects this five pack is an excellent choice. The wide voltage range of 3.3 to 5 volts means it works with many different microcontrollers beyond just standard Arduino boards. It is a solid starting point for anyone new to sensor integration.
Simple Integration for Beginners
The single wire digital signal greatly reduces the programming effort required making it ideal for those new to electronics.
Wide Voltage Compatibility
Operating between 3.3 and 5 volts allows it to work seamlessly with both 3.3V and 5V logic boards.
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2. 2pcs DHT11 Module – Reliable Entry Level Option
2pcs DHT11 Module
Resistive element design
8 bit controller
Single wire interface
Digital output form
This product offers two units of the DHT11 sensor which is known for its high reliability and excellent long term stability in typical conditions. It uses a dedicated digital module and acquisition technology to ensure that the temperature and humidity readings are consistent over time. The 4.3 star rating reflects its solid performance for basic environmental monitoring needs.
Pros
- Works with Raspberry Pi
- Compact module size
- Included connecting wires
- Stable long term
- Affordable two pack
Cons
- Limited to indoor use
- Basic accuracy levels
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The sensor consists of a resistive element and a sense of wet NTC temperature measurement devices connected to a high performance 8 bit microcontroller. This internal architecture ensures that the digital signal output is clean and easy to read by your microcontroller without needing extra analog to digital conversion. The single wire scheme keeps your wiring simple and tidy.
While it is great for general monitoring you should note that the temperature range is limited to 0 to 50 degrees Celsius which may not suit outdoor winter projects. The humidity error of plus minus 5 percent is acceptable for a weather station but might not be enough for precise HVAC control. It is best used in controlled indoor environments.
If you need a small quantity of sensors for a pair of projects or as backups this two pack provides good value. The compatibility with both Arduino and Raspberry Pi makes it a versatile choice for different development ecosystems. The included wires save you time on assembly and let you focus on coding the logic.
Cross Platform Support
This module works well with both Arduino and Raspberry Pi platforms allowing flexibility in your hardware choices.
Internal Calibration
The built in microcontroller ensures reliable and long term stability without requiring external calibration by the user.
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3. Teyleten Robot SHT31 – Best Premium Arduino Humidity Sensor
Teyleten Robot SHT31
I2C interface output
Wide voltage operation
High accuracy specs
Full humidity range
The SHT31 sensor is a significant upgrade from the DHT series offering a humidity measurement range of 0 to 100 percent RH with excellent accuracy. It features a temperature measurement range of minus 40 to 125 degrees Celsius which makes it suitable for both indoor and outdoor environmental monitoring tasks. With a 4.7 star rating it is clearly a favorite among serious hobbyists.
Pros
- High accuracy readings
- Wide voltage range
- I2C communication easy
- Wide temp range
- Three pack value
Cons
- Higher cost than DHT
- Needs pull up resistors
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This module operates on a wide voltage range of 2.4 to 5.5 volts DC which provides great flexibility for different power sources and microcontroller logic levels. The I2C interface output allows for easier wiring compared to single wire digital sensors as it uses only two data lines for communication. The accuracy of plus minus 2 percent humidity and 0.3 degrees Celsius is very impressive for this price point.
The only drawback compared to cheaper options is the higher cost per unit which might be overkill for very simple projects. You will also need to ensure your microcontroller supports I2C which is standard on most modern boards but still requires specific library setup. However the performance and reliability benefits often justify the extra investment.
If you need precise data for a professional looking project or a system where accuracy is critical this three pack is a fantastic choice. The robust build and wide operating conditions mean it will last longer in varying environments than lower end sensors. It is the best premium option on this list for quality conscious builders.
Superior Accuracy
With a accuracy of plus minus 2 percent humidity and 0.3 degrees Celsius this sensor delivers professional grade data.
Wide Operating Voltage
The 2.4 to 5.5 volt range makes it compatible with a wide variety of power sources and logic levels.
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4. HiLetgo 2pcs DHT22 – Mid Range Accuracy Upgrade
HiLetgo 2pcs DHT22
AM2302 high sensitive
Single bus digital
Plus minus 0.5 C
Plus minus 2 percent RH
This module features the AM2302 chip which is a high sensitive temperature and humidity sensor that replaces older models like SHT11 and SHT15 with better performance. It offers a temperature range of minus 40 to 80 degrees Celsius and a humidity measuring range of 0 to 100 percent RH which covers almost all typical use cases. The 4.4 star rating confirms its reliability for electronic practice and DIY projects.
Pros
- Better accuracy than DHT11
- Fixed screw holes
- Wider temp range
- Easy to install
- Two pack quantity
Cons
- Still single wire
- Slightly slower response
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The bidirectional serial data output ensures stable communication with your microcontroller and the single bus digital signal keeps wiring simple. With fixing screw holes on the module it is convenient to install and fixed securely to your enclosure without relying on tape or glue. This physical stability helps ensure consistent readings over long periods.
While it is more accurate than the DHT11 with an error of plus minus 0.5 degrees Celsius and plus minus 2 percent RH it still uses the slower single wire protocol. You may need to wait between readings which can be a limitation for fast changing environments. However for most monitoring applications the speed is adequate.
If you need more precision than the basic DHT11 offers but do not want to deal with I2C protocols this sensor is a perfect middle ground. The physical design with mounting holes makes it suitable for permanent installations in weather stations or smart home hubs. It is a reliable choice for intermediate users.
Secure Mounting Design
The module includes fixing screw holes that allow you to mount it securely without relying on adhesives.
Upgraded Chipset
The AM2302 chip provides better sensitivity and accuracy compared to older sensor models in this category.
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5. Teyleten DHT11 5pcs – Bulk Pack Value
Teyleten DHT11 5pcs
Humidity 20 to 95
Temp 0 to 50
3.3 to 5V
Lightweight 8 grams
This set provides five units of the classic DHT11 digital temperature and humidity sensor module which is perfect for projects that require multiple sensors or for classrooms. Each unit operates on a standard voltage of 3.3 to 5 volts which makes it compatible with the vast majority of hobbyist microcontrollers. The 4.4 star rating suggests consistent quality across the batch.
Pros
- Five units included
- Very light weight
- Standard voltage range
- Compact size
- Good for classes
Cons
- Standard accuracy limits
- Not for extreme temps
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Each sensor weighs about 8 grams which is quite lightweight and will not add significant load to your project enclosure. The humidity measuring range of 20 to 95 percent and temperature measuring range of 0 to 50 degrees are typical for this type of internal sensor. The measurement errors are plus minus 5 percent for humidity and plus minus 2 degrees for temperature.
The main limitation is the standard accuracy which is fine for general trends but not for critical applications. The temperature range stops at 50 degrees so it is not suitable for hot environments like attics or saunas. However the price per unit in this pack makes it very accessible for learning and experimentation.
If you are teaching a class or need to set up sensors in multiple rooms this five pack is highly practical. The simplicity of use and low cost allow you to experiment with different configurations without worrying about breaking expensive hardware. It is a solid value option for students and educators.
Lightweight Design
Weighing only 8 grams each these modules are easy to mount on lightweight structures without additional support.
Educational Value
The bulk pack format is ideal for teaching environments where multiple students need their own working sensors.
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6. DHT22 AM2302 2pcs – Quick Response Stability
DHT22 AM2302 2pcs
Stable performance
Quick response times
28mm compact size
215mm connecting wire
This module offers a stable performance with quick response times making it effective for monitoring environments where conditions change more rapidly. The compact size of 28mm allows it to fit into tight enclosures which is helpful for small electronics projects. The 4.6 star rating indicates that users are satisfied with its overall reliability and consistency.
Pros
- Fast response times
- Includes 215mm cable
- Screw hole mounting
- Wide application fit
- High rating
Cons
- Single wire limits speed
- Price higher than DHT11
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The package includes 215mm connecting wires which saves you the trouble of sourcing and soldering your own long cables. This feature is particularly useful when you need to place the sensor away from the main microcontroller board. The screw holes for easy mounting ensure the sensor stays in place during operation.
While it shares the same single bus digital signal output as the DHT11 it offers better accuracy and a wider temperature range. You will still need to manage the timing carefully in your code since it is not a synchronous interface. However the hardware convenience of the long wires is a major plus.
If you need a sensor that can be mounted remotely from your main board this pack is very convenient. The stable performance and quick response make it suitable for home appliances and humidity regulators. It is a well designed module for practical daily use.
Remote Placement Ready
The included 215mm wires allow you to place the sensor away from the main board easily.
Quick Response
With quick response times it can detect changes in humidity and temperature faster than basic models.
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7. Teyleten DHT22 3pcs – Good Volume Option
Teyleten DHT22 3pcs
Voltage 3.3 to 5.5
Humidity 0 to 100 percent
Temp -40 to 80
Serial data bidirectional
This three pack offers the DHT22 sensor which is a step up in precision from the DHT11 with a working voltage range of 3.3 to 5.5 volts. It supports a humidity measurement range of 0 to 100 percent RH and a temperature measurement range of minus 40 to 80 degrees Celsius. The 3.9 star rating suggests there may be some variance in quality control compared to other brands.
Pros
- Three units included
- Wide voltage range
- Full humidity span
- Standard interface
- Compatible with many boards
Cons
- Lower user rating
- Inconsistent quality possible
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The single bus digital signal output ensures compatibility with the standard libraries used by most Arduino and microcontroller users. It uses serial data bidirectional port communication which is robust but requires specific timing in your software to avoid read errors. The wide voltage compatibility makes it easy to integrate into mixed logic systems.
While it is affordable the lower rating suggests that some units might fail or have calibration issues. It is still a functional sensor for non critical applications where absolute precision is not required. The three pack volume is useful if you want to have spares on hand.
If you are comfortable with the possibility of occasional variance and need a low cost solution for bulk projects this is a viable choice. It is best used for general monitoring where a small failure rate is acceptable. For critical systems you might prefer a higher rated brand.
Volume Availability
Getting three units in one pack allows you to have spares or cover multiple locations at once.
Flexible Voltage
The 3.3 to 5.5 volt range ensures it works with a wide variety of power sources.
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8. 10-Pack DHT11 – Maximum Bulk Value
10-Pack DHT11
Humidity 20 to 90
Temperature 0 to 50
3.3 to 5.5V
Bypass capacitor onboard
This package provides ten units of the DHT11 sensor which is ideal for large scale projects or educational workshops where many students need their own units. Each sensor is a calibrated unit that combines a resistive humidity element and an NTC temperature measurement device to provide reliable digital signal output. The 4.6 star rating reflects high customer satisfaction with the batch quality.
Pros
- Ten units included
- Includes connecting cables
- Onboard capacitor
- Great for classes
- Reliable long term
Cons
- Lower accuracy specs
- Not for extreme heat
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The package includes five DHT11 sensor modules and five corresponding 3 pin connection cables which is a cost effective value for bulk needs. The onboard bypass capacitor and pull up resistor minimize external circuitry and simplify connections to your microcontroller IO port. This reduces the time needed for soldering and wiring.
The humidity range of 20 to 90 percent RH and temperature range of 0 to 50 degrees are sufficient for most indoor environments. The long-term stability is rated at less than 1 percent RH per year which is good for consistent monitoring. However the standard accuracy is not suitable for high precision industrial applications.
If you are running a workshop or need to deploy sensors in many locations this bulk pack is excellent. The documentation and support available through the store help you get started quickly with troubleshooting. It is the best choice for high volume needs on a budget.
Complete Kit
The inclusion of connecting cables and onboard components makes this a complete ready to use kit.
Long Term Stability
Rated at less than 1 percent RH per year it maintains its accuracy over extended periods of use.
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9. 4Pcs DHT22 – Quality Components
4Pcs DHT22
Precision 2 percent RH
Accuracy 0.5 C
Weight 6.4 grams
Voltage 3 to 5.5
This module is made with top of the line electronics components ensuring reliable and long lasting performance in your projects. It offers accurate environmental readings with a precision of plus minus 2 percent RH and an accuracy of plus minus 0.5 degrees Celsius. The 4.0 star rating suggests it meets expectations for general purpose use.
Pros
- Top quality components
- Compact design
- Strong anti interference
- Includes cables
- Four units included
Cons
- Standard interface speed
- Moderate rating
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The compact size of 38mm by 15mm by 10mm and lightweight design at approximately 6.4 grams make it easy to fit in tight spaces. It features a single bus digital signal output and bidirectional serial data which is standard for this class of sensor. The strong anti-interference capabilities help maintain data integrity in noisy environments.
While the performance is solid the interface is not as fast as I2C options which limits its use in high speed systems. The voltage range of 3 to 5.5 volts is standard for most boards but you should ensure stable power to avoid fluctuations. It is a solid choice for medium volume needs.
If you need four units for a small project cluster this pack offers good value and quality. The user friendly design and included cables save you time on setup. It is best suited for applications where reliability and accuracy are more important than speed.
Strong Anti Interference
The module ensures reliable operation even in environments with electrical noise or other signals.
Compact and Light
At just 6.4 grams it is easy to mount on light structures without adding much weight.
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10. Teyleten AHT30 – Best Precision for I2C
Teyleten AHT30
I2C master output
Low power consumption
Accuracy 0.3 C
Resolution 0.01 C
This sensor offers high precision with a temperature accuracy of plus minus 0.3 degrees and humidity accuracy of plus minus 2 percent RH at 25 degrees Celsius. It features I2C master output which allows simultaneous online access to multiple I2C electronic devices or modules on the same bus. The perfect 5.0 star rating highlights exceptional user satisfaction.
Pros
- 5 star rating
- High precision specs
- I2C easy wiring
- Low power usage
- Upgraded version
Cons
- Requires I2C setup
- Less common library
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The supply voltage range of DC 2.0 to 5.5 volts allows it to be used with a wide variety of systems without complex power regulation. It has low power consumption and a simple circuit which makes it ideal for battery powered applications. The resolution of 0.01 degrees for temperature provides very fine detail in your data.
The stable and fast transmission speed of I2C is a significant advantage over the single wire digital sensors. This allows for faster data sampling which is crucial for tracking rapid changes in humidity. However you must ensure your library supports the AHT30 which is an upgraded version of the AHT20.
If you want the best performance in this category and are comfortable with I2C communication this is the top pick. The precision and stability make it suitable for professional level projects and critical monitoring. It is a highly recommended upgrade for any serious maker.
High Resolution
With a temperature resolution of 0.01 degrees this sensor captures very subtle environmental changes.
Fast Transmission
The I2C interface provides stable and fast transmission speed which outperforms single wire sensors.
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Buying Guide – How to Choose the Best Arduino Humidity Sensor
Selecting the right sensor requires balancing accuracy cost and ease of use to fit your project goals and technical skills.
Accuracy Requirements
Accuracy is one of the most critical factors when choosing a humidity sensor. Some sensors like the DHT11 offer +/-5 percent accuracy which is fine for general monitoring. Others like the SHT31 or AHT30 offer +/-2 percent accuracy and better temperature precision which is needed for scientific or industrial applications.
Always check the spec sheet for both temperature and humidity accuracy before buying.
Measurement Range
The measurement range defines the limits within which the sensor can provide valid readings. Most indoor sensors work between 20 and 95 percent humidity but some go from 0 to 100 percent. Temperature ranges also vary with some starting at 0 degrees and others at -40 degrees for outdoor use.
Ensure the sensor covers the expected environmental extremes of your project area.
Communication Protocol
Sensors use different communication protocols to send data to the Arduino. Single wire digital sensors are easiest to wire but slower. I2C sensors use two wires and are faster but require pull up resistors. Select the protocol that matches your board and coding comfort level.
I2C is better for multiple devices on one bus while single wire is simpler for beginners.
Voltage Compatibility
Most sensors operate between 3.3V and 5V but some have wider ranges like 2.4V to 5.5V. If you use a 3.3V microcontroller like a Raspberry Pi ensure the sensor supports low voltage. Mismatched voltages can damage the sensor or give inaccurate readings.
Check the voltage specs to match your power supply and board logic levels.
Pack Quantity
Buying sensors in packs often provides better value than buying single units. Consider whether you need one sensor or multiple for different rooms. A five pack might be cheaper than two single units. This helps in stocking spares for future repairs or expansion.
Choose a pack size that fits your current needs and future expansion plans.
Mounting and Size
Physical size and mounting options affect how easily you can install the sensor. Some have screw holes for secure mounting while others rely on tape or glue. Compact sensors fit in tight enclosures but might lack airflow. Consider your enclosure design when selecting a module.
Look for features like screw holes or compact dimensions if space is limited.
Response Time
Response time indicates how quickly the sensor reacts to changes in humidity. Single wire sensors are generally slower while I2C sensors can provide faster updates. If your project requires rapid data logging speed matters more than precision.
For fast changing environments choose a sensor with quick response times and efficient protocol.
Brand and Support
Reputable brands often provide better quality control and technical documentation. Check user reviews for consistency and support availability. A sensor with good documentation helps you troubleshoot errors faster. Brands like HiLetgo and Teyleten are common and well supported.
Prioritize sellers that offer clear manuals and responsive customer service.
How to Use and Care for Your Arduino Humidity Sensor
Connect the sensor to your Arduino board using the provided wires or soldering. Follow the pinout diagram in the product description to match VCC GND and data pins correctly. Ensure the voltage levels match your board to avoid damaging the sensor during initial setup.
Install the required library in the Arduino IDE such as DHT or Adafruit SHT. Write your code to read data and display it on the serial monitor or LCD screen. Test the output by breathing on the sensor to check for immediate humidity changes.
Place the sensor in a location with good airflow and away from direct heat sources. Protect it from dust and water splashes to ensure long term accuracy. Regularly check the calibration and replace the sensor if readings drift significantly over time.
Frequently Asked Questions
Which sensor is best for beginners?
The DHT11 is the most popular choice for beginners because it is affordable and easy to wire. It has simple libraries available and works well for basic projects. However the DHT22 offers better accuracy if you can spend a little more.
Can I use these sensors outdoors?
Some sensors like the DHT22 and SHT31 support lower temperatures which makes them suitable for outdoor use. However you must protect them from rain and direct sunlight using a weather proof enclosure. Always check the temperature range before using outdoors.
Why is my sensor reading wrong?
Wrong readings can be caused by power issues wiring errors or lack of ventilation. Ensure you use a stable power source and correct pin connections. Also avoid placing the sensor near heat sources which can skew the temperature readings significantly.
How long do these sensors last?
Most humidity sensors last for several years with normal indoor use. The accuracy might drift slightly over time but they generally remain functional. Proper mounting and avoiding moisture exposure will help extend their lifespan significantly.
Do I need special libraries?
Yes you typically need specific libraries to interpret the digital output correctly. Popular options include the DHT library by Adafruit or the SHT31 library for I2C sensors. These are freely available in the Arduino IDE library manager.
What is the difference between DHT11 and DHT22?
The DHT22 offers better accuracy and a wider temperature range compared to the DHT11. It is also slightly larger and more expensive. If you need higher precision the DHT22 is a better choice for your project.
Final Thoughts on Choosing the Best Arduino Humidity Sensor
We reviewed ten top sensors ranging from budget DHT11 packs to precision SHT31 modules. The best choice depends on your accuracy needs and project constraints.
Prioritize accuracy and protocol if you need high quality data. For simple learning the DHT11 is unmatched in value and ease.
Always check current prices and availability on the product pages as these factors change frequently.