Most of the vendors at the Pomona Farmer's Market are the same vendors you will find at the Claremont, Fullerton, and other local area farmer's markets. Of all the Farmer's Markets, the Pomona location has the smallest selection.
There's a Greek food vendor that has some good vegan options. They have bread, hummus, a fresh salad with parsley that's pretty tasty, and a dessert with Tahini and almonds. There is also a vendor who sells fresh apple juice that's pretty awesome.
The location is walking distance in the art district, so you can walk around and look at some cute shops. It's also close to the Pomona Library. Sometimes they'll have musicians playing during the Farmer's Market.
I'm giving 3 stars because I wish it was a larger Farmer's Market and that there was a better selection of organic produce.