It's easiest to start from the west side. Hike up from Baboquivari Camp to Lions Ledge (see SummitPost.com's main Baboquivari Peak page). Follow Lion's Ledge east, passing under the South Face. Continue to a big gap formed between the main wall and a house-sized boulder. Don't go all the way around the corner.
The climb is seven pitches, although much of it is fourth class. The route is a fun, easy day of climbing on great rock! Highly recommended.
(1) Climb straight up some easy fifth class rock for 50', then up and left to a belay spot in a notch.
(2) Climb a 30' vertical wall (5.6) to a tree on a ledge.
(3) Up and right over fourth class terrain to a belay ledge with many blocks.
(4) Begin climbing to the left of a small pine tree and work your way up for 120' to a good, vegatated ledge.
(5) A short traverse left ends a belay anchor with two bolts (this pitch can easily be combined with the previous).
(6) Climb up an easy left facing book, then bushwhack a few hundred feet to a large notch.
(7) Descend into the left side of the notch and scamper up a short piece of 5.6 rock. Now, unrope and bushwhack to the summit.
To get down, follow the Forbes Route.
A light rack is sufficient. Most of the route is easily protected. Bring lots of water!