The Delta Aquarids is an average shower that can produce up to 20 meteors per hour at its peak. It is produced by debris left behind by comets Marsden and Kracht.
The shower runs annually from July 12 to August 23. It peaks this year on the night of July 28 and morning of July 29. The second quarter moon will block most of the fainter meteors this year but if you are patient you should still be able to catch quite a few good ones.
Best viewing will be from a dark location after midnight. Meteors will appear to radiate from the constellation Aquarius, but can appear anywhere in the sky.