The Eta Aquarid meteor shower peaks very early Sunday morning May 5th.
The meteors are from a debris field left behind by Halley's Comet.
The best time to see the shooting stars is about 90 minutes before sunrise on Sunday morning.
Sunrise in Tucson is at 5:34 AM.
Look to the east and low in the sky.
If you are familiar with the constellations, the radiant for the meteors will be near the water jug of Aquarius.
SkyandTelescope.com says the Eta Aquarid meteor shower is "typically a good one for Northern and Southern Hemisphere observers, offering about one per minute under ideally dark skies, though the radiant rises late for northerners. These meteors come in fast — 41 miles (66 km) per second!"