Extreme Heat Risk in Boston, MA
Risk Level: Very High — Score 7/10
Live Extreme Heat alert status near Boston
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Live extreme heat activity around Boston — refreshed throughout the day.
Open full-screen map →Key Risk Factors
- FEMA rates Boston's county as Relatively High risk
- Estimated annual loss of $9M from this hazard type
- 20 events recorded in proximity in recent decades
- Active in the last 12 months (9 events)
- Average annual frequency: 5.3 events per year
Peak season: June-September
Last significant event: Heat - Southern New Hampshire, United States (2026-07-09) — 526,000 people exposed
Highest Risk Cities for Extreme Heats
How Boston Compares
Notable Extreme Heat Events Near Boston
DisasterAWARE's historical archive records 5 notable extreme heat events near Boston, ranked below by impact. The most impactful: Heat - Southern New England, United States (May 2026) — 7,670,000 people exposed; $2,470,317M capital exposed.
Heat - Southern New England, United States
May 18, 2026 — ADVISORY
7,670,000 people exposed; $2,470,317M capital exposed
Heat - Hillsborough and Rockingham Counties, New Hampshire, United States
July 3, 2026 — ADVISORY
706,000 people exposed; $184,691M capital exposed
Heat - Southern New Hampshire, United States
July 8, 2026 — ADVISORY
526,000 people exposed; $143,643M capital exposed
Heat - Cape Cod and Islands, Massachusetts, United States
June 30, 2026 — ADVISORY
209,000 people exposed; $42,539M capital exposed
Cold Weather - Middlesex County, Massachusetts, United States
February 6, 2026 — ADVISORY
48,000 people exposed; $8,043M capital exposed
Extreme Heat Preparedness Tips
- 1.Stay hydrated — drink water regularly even if you don’t feel thirsty
- 2.Avoid outdoor activities during peak heat hours (10 AM – 4 PM)
- 3.Know the signs of heat exhaustion and heat stroke
- 4.Check on elderly neighbors and those without air conditioning
- 5.Never leave children or pets in a parked vehicle
Related Pages
How this data is built
Boston, MA extreme heat risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live extreme heat monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.
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