
Heat waves are becoming more frequent and more dangerous across Massachusetts. Extreme heat is the leading weather-related cause of death in the United States – and our communities are seeing more days over 90°F every year. The good news: MAPC has compiled everything you need to prepare, protect your family, and support your neighbors.
WHAT TO DO RIGHT NOW
Find your nearest cooling center by calling 211 or visiting MAPC's Keep Cool resource map.
Drink water regularly — don't wait until you're thirsty. Avoid alcohol and heavy meals during peak heat hours.
Check on elderly neighbors, young children, and anyone without air conditioning. They are most at risk.
Know heat exhaustion signs: heavy sweating, weakness, nausea. No relief after 15 min → call 911.
A NOTE ON EQUITY
Extreme heat does not affect everyone equally across Massachusetts. Communities of color and low-income residents face greater risk due to historic underinvestment in green space, tree canopy, and cooling infrastructure. MAPC's Climate Vulnerability Map shows which neighborhoods in our region are most exposed — and which need the most support.
Access the full MAPC Heat Resource Hub: bit.ly/extreme-heat-guide
Sources: Metropolitan Area Planning Council (MAPC), Extreme Heat Resources (2024); U.S. Centers for Disease Control and Prevention (CDC), Heat-Related Illness guidance; Mass 211 statewide resource helpline.