What the night sky looks like over Monrovia, CA

Satellite radiance puts Monrovia in the rural band. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. Monrovia's sky is brighter than 8.2% of the 3,206 cities in this dataset.

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 Monrovia is from a meaningfully darker sky

Banning, CA, about 64 miles away as the crow flies, measures in the dark sky band, one step darker than Monrovia. Actual driving distance will run longer than that straight-line figure.

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

Monrovia against the rest of the dataset

Monrovia, CA counts roughly 37,787 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Monrovia ranks 263 from darkest to brightest, 1 being the darkest measured.