
06/18/2025
This week’s forecasted heat wave marks the first of the season— when the risk is highest. Data show that heat-related illnesses and hospital visits spike during the first stretch of 85°F days, before people have acclimated to the heat. Please take extra care with vulnerable populations, check on those at risk, and use the tools and resources available to help your patients and community stay safe.
Extreme heat can be dangerous and even life-threatening if precautions are not taken. During prolonged periods of very hot weather, which may include high humidity, the body must work harder to stay cool, increasing the risk of heat-related illness. While anyone can be affected, older adults, young children, pregnant individuals, workers exposed to excessive heat, and people with chronic medical conditions are especially vulnerable. Taking preventive steps—like staying hydrated, avoiding strenuous activity, and seeking cooler environments—can help protect community members during periods of extreme heat.
H.E.A.T. Resources and Alerts
• Extreme Heat Page: A central hub for resources, tools, and guidance to stay safe during periods of extreme heat.
• Unhealthy Heat Forecast Page: Track upcoming heat conditions in your community with a 7-day forecast and color-coded risk levels.
• Updated Extreme Heat Resource Guide: A comprehensive guide for local health, clinicians, and agencies to plan for and respond to extreme heat. (PDF) (DOCX)
• Targeted MDPH HHAN H.E.A.T. Alerts: Timely alerts delivered through HHAN to help healthcare professionals, local health departments, and other stakeholders respond during forecasted extreme heat events.
• Expanded Fact Sheets: Clear, targeted guidance for specific settings and populations vulnerable to extreme heat. Extreme heat resources | Mass.gov