What the night sky looks like over El Cajon, CA

El Cajon's sky measures urban here. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. Only 96.7% of the 3,206 cities measured here read darker than El Cajon.

The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class.

How far El Cajon is from a meaningfully darker sky

4 miles from El Cajon, straight-line, sits Santee, CA, the nearest city here with a darker sky than El Cajon's own urban band.

Santee, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

El Cajon against the rest of the dataset

About 103,291 people live in El Cajon, CA, sized enough to appear in this dataset of 3,206 incorporated US cities. Among all 3,206 cities here, El Cajon ranks 3,082 from darkest to brightest, 1 being the darkest measured.