A heatwave is a prolonged period of excessively hot weather, which may be accompanied by high humidity. It typically occurs when a high-pressure system traps warm air in an area, leading to temperatures significantly above average for that region. Heatwaves can last for several days or even weeks, posing health risks to vulnerable populations. During a heatwave, the risk of heat-related illnesses, such as heat exhaustion and heatstroke, increases. It is essential for individuals to stay hydrated and avoid strenuous activities during extreme heat. Local authorities often issue warnings and guidelines to help people stay safe during these conditions, especially for those in urban areas where heat can be intensified.