Two of the best sites for viewing the current cloud cover worldwide are
Global Montage from the University of Wisconsin at Madison and
World Satellite Infrared Imagery from the United Kingdom's government Met Office. With the second link, you can even get a moving view of the weather and you can click on the individual continents for a closer view of each continent. These links will be permanently listed on the right hand column of this blog, and because they don't completely show the cloud cover over the polar regions I've added some satellite sites showing current Antarctic and Arctic cloud cover. These sites are an
Antarctic site from the University of Wisconsin (any dark areas represent unavailable satellite imagery) and the
Antarctic and
Arctic sites from the Weather Channel. These polar sites are also listed in the right hand column of this blog