Southern California Heat Wave Brings Fire, Health Risks

San Diego County and much of Southern California are facing a severe heat wave this week, with desert temperatures expected to reach up to 118°F and inland areas surpassing 100°F. The National Weather Service has issued an extreme heat warning for the deserts and a heat advisory for the mountains and valleys, both effective through Friday evening. Authorities urge residents to stay hydrated, avoid outdoor exertion, and utilize Cool Zones—free air-conditioned public spaces—to prevent heat-related illnesses. Cal Fire and the Cleveland National Forest have closed several popular hiking trails amid heightened fire danger and are urging caution. Wildfire smoke drifting into San Diego is causing hazy skies and fluctuating air quality, with some locations reaching unhealthy levels for sensitive groups. Officials emphasize that heat is the deadliest form of extreme weather and urge vigilance, particularly for vulnerable populations.