The hot, dry desert winds make the skies crystal clear at night. Last night was a full moon so bright you could see as if it were daylight. This photo was taken around 5am, an hour and a half before sunrise, but you can clearly see the spider web on my weather station a good 30 feet away.
Side note: October this year is extra special because we get two full moons. One on the first of the month, the Harvest Moon and a second, the Blue Moon, on the 31st which also happens to be Halloween, the best night for a full moon ever.