Temecula, CA's night sky, measured from orbit
Satellite radiance puts Temecula in the suburban edge band. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. That's brighter than 20.4% of the 3,206 US cities in this dataset.
Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things.
The nearest darker sky to Temecula
The closest place in this dataset with a meaningfully darker sky is San Jacinto, CA, roughly 23 miles away in a straight line, rated rural. Road distance will be more.
San Jacinto, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Temecula compares nationally
Temecula, CA counts roughly 112,431 residents, among the 3,206 US cities this site tracks. Temecula places 650 of 3,206 cities in this dataset's darkest-to-brightest order.