Concord, CA Night Sky Brightness
Concord, CA's night sky, measured from orbit
Concord reads as suburban edge on this dataset's scale. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 28.4% of the 3,206 cities measured here read darker than Concord.
Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things, explained in the Bortle scale guide.
Where to go for a darker sky near Concord
11 miles from Concord, straight-line, sits Benicia, CA, the nearest city here with a darker sky than Concord's own suburban edge band.
Benicia, 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 Concord compares nationally
Concord, CA has a population of about 124,016, one of 3,206 US cities of 10,000 or more residents in this dataset. Concord's position, 905 of 3,206, darkest to brightest, comes from the sampling method the methodology guide sets out.