Extreme Heat Events

2025 - Unhealthy Heat Forecasts and Extreme Heat Events 
Stay informed with real-time heat forecasts and community resources to help you plan, prepare, and respond to unhealthy heat in Massachusetts.

UNHEALTHY HEAT ALERT 7/13/25 - 7/15/25
PDF: Extreme Health Alert: 7/13-7/16

UNHEALTHY HEAT ALERT 7/5/25 - 7/8/25
PDF: Extreme Heat Alert: 7/5 - 7/8

UNHEALTHY HEAT ALERT 6/30/25 - 7/3/25
PDF: Extreme Heat Alert: 6/30 - 7/3

For more information visit:

https://www.mass.gov/extreme-heat
https://www.mass.gov/info-details/massachusetts-unhealthy-heat-forecast
https://www.mass.gov/info-details/extreme-heat-resources