The SparkFun Qwiic AHT20 is a compact humidity and temperature sensor breakout built around the ASAIR AHT20 sensor. It delivers high-accuracy measurements — temperature within ±0.3 °C and relative humidity within ±2% — at a low price point.

The board connects via the Qwiic (I²C) connector system for solderless, plug-and-play integration. No voltage regulation or level shifting is required. A SparkFun Arduino library is available for easy reading of temperature and humidity data.

Key Features

• AHT20 Sensor – High-accuracy temperature and humidity in a single package
• Temperature Accuracy – ±0.3 °C
• Humidity Accuracy – ±2% RH
• Qwiic / I²C Interface – Solderless connection with automatic voltage regulation
• Arduino Library – Search "SparkFun AHT20" in the Arduino Library Manager

Ideal For

• Indoor climate monitoring
• Weather station projects
• HVAC and environmental logging
• Qwiic sensor chains and data acquisition

Package Contents

• 1× SparkFun Qwiic AHT20 Humidity Sensor Breakout