This is a breakout board for Bosch BME280 high-precision, low-power combined humidity, pressure, and temperature sensor and air quality. Additionally, the sensor can measure the approximate altitude of a place. It can be connected to a microcontroller like Arduino & Raspberry Pi and programmed through I2C.
Want to get an idea of whether there’s adequate ventilation in your bedroom, your workshop, or workplace? Set up a BME680 on a Pi Zero W and have it log sensor readings to a file, or stream live data to a web service like adafruit.io or freeboard.io.