Tonight was photometric until the last hour when very thin cirrus moved through the area. Like last night, the seeing was best at the beginning of the night (1 arcsec) and at the end (1.5 arcsec). During the middle portion of the night the seeing ranged from 1.5-2.5 arcsec.
The weather forecast has unsettled conditions for the next few days as a low
pressure system moves through Arizona.