I suspect that this will be more common than not. There are no perfect 10s on the map for May 2nd, 2012. Perhaps the winds are a little breezy, or maybe there will be some high thin clouds which prevents the perfect score. Either way, the index is designed to show a “prefect” day, not a fine day, of which there will be many. If I were in Fargo, North Dakota tomorrow, I certainly wouldn’t complain with a score of 9, but it demonstrates just how picky I am. Another excellent choice tomorrow: Sacramento, California.