A regional heat advisory will be in effect across Southern California from August 18 through August 20, with temperatures projected to climb between 92 and 105 degrees Fahrenheit. The advisory covers most of the area as extreme heat returns to the region, prompting officials to issue the warning.
The advisory, announced by local weather authorities, signals that the upcoming three‑day period will bring unusually high temperatures for this time of year. Residents can expect daytime highs to reach the low 90s at the cooler end of the forecast and approach the mid‑100s at the hottest locations. Nighttime temperatures are also expected to remain elevated, offering limited relief.
Health agencies have reminded the public that prolonged exposure to temperatures in this range can increase the risk of heat‑related illnesses, including heat exhaustion and heat stroke. They advise individuals to stay hydrated, limit outdoor activity during peak heat hours, and seek air‑conditioned environments when possible. Vulnerable populations such as the elderly, young children, and those with pre‑existing medical conditions are urged to take extra precautions.
Local schools and community centers are reviewing schedules to reduce heat exposure for students and staff. Some facilities may adjust operating hours or provide additional cooling resources. Transportation agencies are monitoring road conditions, as high temperatures can affect pavement integrity and increase the likelihood of vehicle overheating.
The advisory remains in effect until the end of August 20, after which officials will reassess conditions and determine whether extensions or additional warnings are needed. Residents are encouraged to stay informed through official weather updates and to follow guidance from health and emergency management officials throughout the heat event.