Southern Utah is slowly loosing its night sky. I noticed this a few years ago in Zion when I was trying to photograph some hoodoos and kept running into a pesky light bloom, even though I was miles and miles from the city. Then a couple years ago I took the image below of Cedar Breaks. The milky way can be see in the top left corner of the sky and in the right side the stars disappear where the lights of St. George bleeds up into the atmosphere.
The other night I went to look at a meteor shower too earl and looked up and saw almost no stars well into astronomical twilight.
We are loosing the night sky in the southwest corner of Utah.