Weekly Lists - Good Visibility

Good Visibility: 10 cities in the United States with the Highet Percentage of Time When Visibility is 10 Miles or More Visibility is generally best in the Rocky Mountain states where the air is dry and relatively clean and cities are widely spaced. However, rapid growth in many of these cities threatens the previousl high visibility City, State .............................................% of Time when vis. is 10 mi. or more 1 Tucson, Arizona..............................................99.4% 2 Las Vegas, Nevada..........................................99.1% 3 Honolulu, Hawaii..............................................98.6% 4 Albuquerque, New Mexico..................................98.2% 5 Phoenix, Arizona..............................................98.1% 6 Grand Junction, Colorado...................................96.3% 7 El Paso, Texas.................................................95.9% 8 Helena, Montana..............................................94.8% 9 Pueblo, Colorado..............................................94.2% 10 Casper, Wyoming............................................93.5%>