Catalyzes the glucosylation of quercetin (PubMed:21175894). Preferentially uses UDP-glucose as sugar donor, but is also able to use UDP-gal and UDP-xyl (PubMed:21175894). Is probably not required for the accumulation of anthocyanin in red-fleshed kiwifruit varieties (PubMed:21175894). a flavonol + UDP-alpha-D-glucose = a flavonol 3-O-beta-D-glucoside + H(+) + UDP Flavonoid metabolism. Expressed in ovaries. Expressed in the inner pericarp of developing fruit at 20 to 126 days after flowering (DAF). Belongs to the UDP-glycosyltransferase family.