Extreme heat and tropical nights are causing a rapid increase in heat-related illnesses across the country. According to Yonhap News and the Korea Disease Control and Prevention Agency, as of July 27, there have been 1,399 reported cases of heat-related illnesses since the monitoring system was activated on May 15, including eight fatalities.
Individuals aged 65 and older accounted for 30.2% of the cases. Notably, all but one of the fatalities were among those aged 65 and above, with the exception of one individual in their 50s.
Heat-related illnesses occur due to prolonged exposure to high temperatures and can manifest as heat stroke, heat exhaustion, heat cramps, heat syncope, and heat edema. Symptoms may include headaches, dizziness, muscle cramps, extreme fatigue, vomiting, and altered consciousness. If left untreated, these conditions can pose life-threatening risks.
Heat stroke, in particular, is an emergency condition characterized by a rapid rise in body temperature, confusion, or seizures. If a patient loses consciousness or is unable to communicate properly, simply providing water is insufficient. Immediate action should include calling emergency services and moving the patient to a cool location while loosening their clothing to help cool their body.
On July 27, Yonhap News, the government, and the medical community reported that the Ministry of the Interior and Safety raised the heat wave disaster warning to 'serious' as of 3 p.m. the previous day and activated the Central Disaster and Safety Countermeasure Headquarters. This decision follows the issuance of heat wave advisories across most regions after the end of the monsoon season, with forecasts indicating that the oppressive heat and tropical nights will continue for the foreseeable future.
Heat-related illnesses do not only occur during the hottest hours of the day. They can also arise in workplaces with high humidity, poorly ventilated indoor spaces, or homes without air conditioning. Continued tropical nights, where temperatures do not drop significantly, can lead to sleep deprivation and fatigue, further impairing the body's ability to regulate temperature.
In 2025, there were 4,460 reported cases of heat-related illnesses and an estimated 29 fatalities. Of these cases, 79.2% occurred outdoors, particularly in outdoor workplaces, fields, and along roadsides. The majority of incidents were concentrated between 2 p.m. and 5 p.m.
Online discussions have highlighted the need to improve outdoor working conditions during extreme heat. Users have expressed that individual caution is insufficient in such heat, advocating for mandatory breaks during heat advisories and calling for an end to workplaces that penalize employees for taking breaks.
One user noted, “Even in an air-conditioned office, stepping outside can be suffocating. Imagine how difficult it is for those working outdoors all day,” emphasizing the importance of ensuring actual time and space for rest rather than just providing bottled water.
Conversely, some have pointed out the practical challenges of enforcing work stoppages or extended breaks. “Even with regulations, many cannot take breaks due to construction schedules or delivery times,” said one commenter. “Contract workers or day laborers often find it hard to voice their discomfort. Supervisors need to take the initiative to halt work.”
There is also a growing call to strengthen protections for the elderly. Older adults may not feel thirst as acutely or may have impaired temperature regulation due to medications and chronic conditions. The risk increases significantly for those engaged in fieldwork or long-distance travel during peak heat hours.
Users have shared their concerns, stating, “I call my parents every day to remind them not to work in the fields during the day,” and “It’s crucial to check on elderly individuals living alone during heat waves.” They also noted that even if cooling centers are available, distance can be a barrier to access, highlighting the need for community-level support.
Concerns about outdoor activities for children and teenagers have also been raised. “Kids can get carried away playing and may not realize how hard they’re pushing themselves,” one user commented. “School sports and outdoor activities should be adjusted based on temperature and heat index,” while another warned against leaving children unattended in strollers or vehicles.
Many have expressed worries about the financial burden of cooling costs. Some users pointed out that vulnerable populations may hesitate to use air conditioning due to concerns about electricity bills, arguing that extreme heat is not just a weather issue but also a matter of housing, labor, and welfare, calling for increased support for cooling costs and expanded cooling centers.
To prevent heat-related illnesses, it is advisable to drink water frequently before feeling thirsty. When going outside, wearing hats or using umbrellas to block sunlight and donning light-colored, loose-fitting clothing can help. During the hottest parts of the day, it is best to reduce outdoor work and exercise and to rest in cool places as much as possible. The Korea Disease Control and Prevention Agency recommends that individuals with kidney conditions or other health issues consult with healthcare providers regarding their fluid intake.
If someone suddenly experiences dizziness, headaches, vomiting, or muscle cramps, they should immediately stop their activities and move to a shaded or air-conditioned area. However, forcing a disoriented patient to drink water can pose a choking hazard. If a patient exhibits altered consciousness, seizures, or high body temperature, emergency services should be contacted without delay. Even if symptoms temporarily improve, it is advisable for older adults or those with chronic conditions to seek medical attention to ensure their safety.
Experts and authorities emphasize that extreme heat should not be viewed merely as an uncomfortable summer phenomenon. High temperatures combined with humidity can expose even healthy individuals to heat-related illnesses in a short time. Online discussions reflect this sentiment, with comments such as, “Enduring the heat is not a sign of strength,” and “Feeling dizzy may be a warning sign from your body.” Users also stressed the importance of checking on colleagues or family members who may be speaking or moving differently than usual.
As the heat wave persists, it is crucial not only for individuals to remain vigilant but also for workplaces, schools, and local governments to take proactive measures. It is essential to monitor heat advisories and adhere to basic guidelines of hydration, rest, and seeking shade, while also being attentive to vulnerable neighbors, such as elderly individuals living alone and outdoor workers.
* This article has been translated by AI.
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