The poll found 52 percent of Californians giving Obama good marks, down from 56 percent in January and 65 percent a year ago.
At the same time, Californians gave a resounding thumbs-down to Congress, with only 12 percent of the state's voters approving of its performance. That's the lowest assessment since Field began tracking Congress two decades ago.
The poll found Californians evenly split on the President's handling of health care, with 45% approving and 45% disapproving.
The Field Poll is the latest in an alarming trend for California Democrats, with recent polling showing both Barbara Boxer and Jerry Brown facing tough opposition from their GOP opponents in this years elections.