Features:

• The SparkFun Weather Shield is an easy-to-use Arduino shield that grants you access to barometric pressure, relative humidity, luminosity and temperature. • There are also connections on this shield to optional sensors such as wind speed, direction, rain gauge and GPS for location and super accurate timing.
• The Weather Shield utilizes the Si7021 humidity/temperature sensor, the MPL3115A2 barometric pressure sensor and the ALS-PT19 light sensor.
• The shield relies on the Si7021 and MPL3115A2 Arduino libraries.
• Each shield comes with two unpopulated RJ11 connector spaces (for optional hookup of rain and wind sensors) and a 6-pin GPS connector (for optional hookup of a GP-735 GPS module).
• each Weather Shield can operate from 3.3V up to 16V and has built-in voltage regulators and signal translators.