Alta Loma is a small community located in the foothills of the San Gabriel Mountains in Southern California. The climate is classified as Mediterranean, with hot and dry summers and mild, wet winters. The area is known for its high levels of hydrology constituents, primarily due to run-off from the nearby mountains. Outdoor recreation opportunities in Alta Loma include hiking, mountain biking, and horseback riding in the nearby parks and trails. The area is also home to several golf courses and is a popular destination for birdwatching. Overall, Alta Loma offers a unique mix of outdoor activities and natural beauty, making it a popular destination for visitors and residents alike.