Fallbrook Certified Farmers Market takes place every Friday from 10am - 2pm and Sunday from 11am - 3pm at 102 S. Main St. (map).

Having been only to the Friday Market, I can not attest to the quality of the Sunday.  As for the Friday, it is small.  The Village Square setting is very pretty, but the contents of the market were mostly crafts - Tupperware, jewelry, handbags.  At my visit, there were only five food vendors, and one of those was selling prepared BBQ.