The MEAS weather shield for ARDUINO/Genuino mother board provides the necessary hardware to interface the HTU21D digital relative humidity sensor, MS5637 digital barometric pressure sensor, temperature system sensor (TSYS01), MS8607 digital relative humidity and digital pressure sensor, TSD305-1C55 digital thermopile sensor, all from TE Connectivity (TE) to any system that utilizes ARDUINO/Genuino mother board compatible expansion ports configurable for I2C communication. The HTU21D sensor is a self-contained humidity and temperature sensor that is fully calibrated during manufacturing.