The heat wave poses significant risks, especially for vulnerable populations such as the elderly, children, and those with pre-existing health conditions. Heat indices exceeding 105°F (40°C) can lead to heat-related illnesses, including heat exhaustion and heat stroke. Outdoor workers and those without access to air conditioning are particularly at risk. The Greater Boston area is expected to experience the most severe impacts, with potential record-breaking temperatures. Residents are advised to limit outdoor activities during peak heat hours and stay hydrated. (Source: The Boston Globe, 2026-06-28, 22:37:40 GMT)