Free surface microfluidics has received much attention for its applications, especially in airborne chemical detection. In free surface microfluidics the evaporation rate plays an important role in the flow dynamics therefore we quantified the evaporation rate of a droplet of water from 0.5 to 3 microliters on different types of hydrophilic and hydrophobic surfaces at various temperatures ranging from ambient temperature to 70C. We also recorded the change in the contact angle of the water droplet through time on the different surfaces. The evaporation rate was measured by placing a droplet of water on a surface inside of a chamber and finding the average evaporation time and then the rate was related to temperature through an equation similar to the Antoine equation which relates vapor pressure and temperature. The contact angle was recorded throughout the experiment by taking pictures of the droplet at different times and using image analysis software. From these experiments we observed a correlation between constants in the equation used and using the evaporation rate and information obtained from the pictures we related the constants to the different surfaces they were placed on and parameters such as surface temperature and humidity. From the experiments performed in a controlled environment we observed a pattern between the constants that relate evaporation to temperature and then related the constants to the different surfaces. This study will provide important information to the development of devices for airborne chemical detection.