Sky darkness(Bortle class 1 is best): 2-

image credit: Google Maps

South-east of Flagstaff on Anderson Mesa near the Lowell Perkins Observatory and Navy Precision Optical Interferometerj:

• From E. John W. Powell Blvd. Turn LEFT onto Lake Mary Road and Go 8.2 miles. There is a brown sign on the right side of the road for “Marshall Lake” and “NPOI”.
• Turn LEFT shortly after the sign onto Coconino County 128 (sign for CC 128 only appears after you are on the road). CC 128 is a switch-back road going up the side of Anderson Mesa. Go 1.3 miles up the switch-back.
• You will see a sign for “Marshall Lake” and “Lowell Observatory”, turn RIGHT just before the sign to towards “Lowell Observatory”. Go 0.3 miles up to the observing site at the top of the mesa.

Clear Dark Sky Forecast History / Climate Information

Astrospheric graphical astronomical forecast