The BME280 is one of the newest Bosch humidity, pressure and temperature sensor with digital I2C and SPI interface. On the breakout you can find a voltage regulator and level translator, so you can use the board on 3V to 5,5V systems.
Features:Humidity sensor
Response time (t63%) 1s
Accuracy tolerance ± 3 % relative humidity
Hysteresis = 2 % relative humidity
Pressure sensor
Pressure range 300 … 1100 hPa (equiv. to +9000…-500 m above/below sea level)
Relative accuracy ±0.12 hPa, equiv. to ±1 m (950 … 1050hPa @25°C)
Absolute accuracy typ. ±1 hPa (950 ...1050 hPa, 0 ...+40 °C)
Temperatur Sensor
Operating range Operational -40°C - +85°C / Full accuracy 0°C - +65°C
Digital interfaces I²C (up to 3.4 MHz) / SPI (3 and 4 wire, up to 10 MHz)
Current consumption 2.7µA @ 1 Hz sampling rate
More Information:
github.com/watterott/BME280-Breakout