First Aid during a Southern California Heatwave: Warning signs, what to do, where to find care, and other resources. August 20th, 2026 During California summers, life-threatening emergencies like heatstroke require calling 911 immediately. Move the person to a shaded or air-conditioned area, loosen clothing, and aggressively cool them with wet cloths, ice packs, or a cool bath. Do not give them fluids if they are unconscious or vomiting. [1, 2, 3, 4, 5] Warning Signs & First
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