The crash happened around 7:26 p.m. Friday in the 100 block of West Newmark Avenue. Monterey Park police responded to the incident.
A woman was crossing Newmark Avenue mid-block between Garfield and Ramona avenues when she was struck by a car traveling westbound on Newmark.
The driver fled the scene in a light colored SUV with chrome rims.
Emergency personnel took the woman to a nearby hospital, where she remains in critical condition.
The crash remains under investigation.
Anyone with more information is urged to call the Monterey Park Police Department at (626) 307-1238 or the watch commander at (626) 573-1311.