San Jose sits in the Santa Clara Valley, framed by the Diablo Range to the east and the Santa Cruz Mountains to the west, enjoying a mild Mediterranean climate.
* **Air Quality:** Generally good, facilitated by the Bay Area's coastal breezes. However, air quality can decline significantly during the late summer and fall if regional wildfires occur. * **Water Quality:** Tap water meets or exceeds all state and federal standards, though it tends to be "hard" due to mineral content. * **Protected Areas:** The city boasts numerous parks and open spaces, including Alum Rock Park (one of the oldest municipal parks in California), the Don Edwards San Francisco Bay National Wildlife Refuge at the city's northern edge, and extensive trail networks like the Guadalupe River Trail and Coyote Creek Trail. * **Sustainability:** San Jose's "Climate Smart" initiative outlines goals for reducing greenhouse gas emissions, increasing renewable energy usage, and building a more sustainable urban infrastructure.
