Extreme Heat Prompts Trail Closures and Safety Warnings in San Diego

San Diego County has temporarily closed three popular hiking areas — El Capitan Preserve, Hellhole Canyon, and Mount Gower — for the month of August due to dangerous heat conditions. As Alex Lai reports, the annual closures are aimed at protecting hikers from heat-related emergencies and give park staff time to perform maintenance on the trails. Additional parks near the Anza-Borrego Desert, including Agua Caliente and Vallecito, have been closed since May and are set to reopen by Labor Day weekend.

Despite the closures, many hikers are still heading to other open trails such as Iron Mountain in Poway. Hikers like Annie and Nathan emphasize the importance of early starts, hydration, and sun protection — practices that can significantly reduce heat risks. CAL FIRE officials, however, continue to respond to frequent heat-related rescues, some of which require air support due to the remote locations and physical condition of those needing help.

Authorities urge all hikers, especially beginners, to be cautious during elevated temperatures and to plan ahead. Safety tips include wearing loose, light-colored clothing, packing extra water and electrolyte-replacement drinks, and avoiding peak heat hours. The closed trails are expected to reopen on September 1, but officials stress that heat safety should be a priority year-round.