Satellite Map Layer in Weather Mate, which is a free weather app for iPad, features two types of satellites: Infrared and Visible. In infrared satellite images, the clouds are depicted by their temperature. Moving down the spectrum to various tones of grey, represents low and warm clouds whereas as we proceed up the spectrum to purple color, it portrays high and cold clouds. Infrared satellite images are available for the entire day. Visible satellite images are exactly as seen from space and can only be obtained during the daylight.