---
title: "Charleston Prepares for Extreme Heat: Understanding Risks and Safety Measures"
url: https://www.herecharleston.com/2026/08/09/charleston-prepares-extreme-heat/
date: 2026-08-09T09:49:26+00:00
modified: 2026-08-09T09:49:26+00:00
author: "Oswaldo Palma"
categories: ["National"]
site: "HERE Charleston"
attribution: "HERE Charleston"
---

# Charleston Prepares for Extreme Heat: Understanding Risks and Safety Measures

*Source: [HERE Charleston](https://www.herecharleston.com/2026/08/09/charleston-prepares-extreme-heat/) — August 9, 2026 by Oswaldo Palma*

Extreme heat events, defined as a series of days significantly hotter than average for a given time and place, pose a substantial public health risk. These events are increasingly common, more severe, and longer-lasting, a trend linked to the ongoing climate crisis. Across the nation, extreme heat claims more lives annually than any other weather-related phenomenon, underscoring the critical need for effective safety protocols in communities like Charleston.

Preparation for such events begins with ensuring adequate hydration. An average adult requires approximately three-quarters of a gallon of water daily, though individual needs can fluctuate based on activity levels and personal health. It is crucial to prioritize plain water and avoid sugary beverages, caffeinated drinks, and alcohol, all of which can contribute to dehydration rather than alleviate it. Maintaining proper hydration is a fundamental defense against the physiological stresses imposed by high temperatures.

Emergency preparedness extends beyond daily water intake to include comprehensive supply kits. A ‘Go-Kit’ should contain at least three days of portable essentials, ready for immediate evacuation if necessary. For those sheltering in place, a ‘Stay-at-Home Kit’ should be stocked with at least two weeks of supplies. Both kits should include a minimum of one gallon of drinking water per person per day. Additionally, individuals relying on prescription medications should maintain at least a one-month supply in a child-proof container, ensuring continuity of care during prolonged heat events or power outages.

During periods of extreme heat, seeking air-conditioned environments is paramount. Residents without home air conditioning are advised to identify and utilize predesignated cool locations, such as public libraries or community centers, before temperatures become dangerously high. When outdoors, wearing lightweight, loose-fitting clothing can help the body regulate temperature more effectively. Taking cool showers or baths offers a direct way to lower body temperature. Limiting strenuous outdoor activity, especially during the hottest parts of the day, is also a key recommendation to prevent overheating.

Certain populations face a heightened risk of heat-related illness. Older adults, whose bodies may have a diminished capacity to regulate temperature, are particularly vulnerable. Infants, young children, and pregnant women also require extra precautions due to their physiological sensitivities. Individuals with pre-existing medical conditions, such as heart disease or diabetes, must be especially vigilant. Outdoor workers, including those employed by major Charleston entities like Joint Base Charleston, The Boeing Company, or Charleston County Government, are at constant risk due to prolonged exposure to high temperatures and physical exertion. Furthermore, people with limited personal resources, who may lack access to air conditioning or adequate hydration, and those living in areas with fewer green spaces, which tend to be hotter, face disproportionate risks.

Recognizing the symptoms of heat illness is vital for timely intervention. Heat exhaustion manifests with heavy sweating, cold and clammy skin, a fast but weak pulse, nausea or vomiting, muscle cramps, fatigue, dizziness, and headaches. If vomiting occurs, symptoms persist for over an hour, or confusion develops, medical attention is advised. While serious, heat exhaustion is generally less severe than heat stroke.

Heat stroke is a medical emergency that can be deadly and requires immediate professional treatment. Warning signs include a dangerously high body temperature of 104°F or higher, hot, red, dry, or damp skin, a rapid and strong pulse, headache, dizziness, nausea, confusion, or loss of consciousness. In such cases, the guidance is unequivocal: call 911 immediately. While awaiting emergency services, efforts should be made to cool the person’s body, but nothing should be given to them to drink.

### Why it matters in Charleston

Charleston’s climate, characterized by hot and humid summers, makes understanding and implementing extreme heat safety guidance particularly critical for the local community. The Medical University of South Carolina (MUSC) and Roper St. Francis Healthcare often see an increase in heat-related emergency room visits during prolonged periods of high temperatures. Proactive measures, such as staying hydrated and identifying cool public spaces, can significantly reduce the burden on these vital healthcare systems and safeguard public health. The guidance directly impacts the well-being of residents, especially vulnerable populations in neighborhoods like North Central or Westside, and those working outdoors in the region’s prominent industries.