High Performance Relative Humidity sensor from MEMSVision:

The new MVH4000D-Series relative humidity and temperature sensors provide a very high accuracy of 1.5%RH and 0.2°C, while having a very fast response time. The sensors have excellent long term stability and are calibrated from the factory. A standard I2C Interface is used, which can be used to freely program many parameters such as resolution and frequency of measurements for maximum flexibility and to minimize power consumption, depending on the application and operating condition. An analog output is available as well for easier design-in.