This is a very interesting site intended for astronomers. Projecting over the next 48 hours, it predicts 4 qualities affecting sky watchers / star gazers: cloud cover, transparency, ‘seeing’, and darkness. Naturally, Chaco has a pretty dark sky.
What really makes me note this site are the links below the “clock” to various other sites, particularly the Topo Map and Star Map links. Pretty cool.
Also, look for the link to ‘All New Mexico’. From the home page, you can see similar data for points all around the globe. This site and its links are worth some time exploring. mjh