Heat alerts · health and power readiness

Heat alerts and extreme heat safety

Extreme heat can become dangerous quietly. The useful action is to check official alerts, plan cooling, and support vulnerable people before the hottest hours.

Open heat safety guide Build outage supplies

heat alert todayextreme heat warningexcessive heat warning near meheat advisory today near me

Disaster Calendar is not an official emergency alert service. Confirm active threats with your local authorities and the official sources linked below.

Current public signals

Latest matching signals.

Public feed snapshot updated at Jul 7, 2026, 8:35 AM UTC. Signal cards are awareness links, not local evacuation instructions.

No matching public feed item was loaded in this build snapshot. Use the official source links below for the latest local status.

Official and expert sources

Verify with source-of-record pages.

Sources policy

CDC Extreme Heat

Health guidance for extreme heat.

Open source →

National Weather Service Heat Safety

Heat alerts and safety information.

Open source →

Ready.gov Extreme Heat

Preparedness steps for heat events.

Open source →

Heat wave safety

Practical safety steps for hot days.

Emergency kit checklist

Supplies that also help during power stress.

Countries

Official alert links by country.

FAQ

Common questions

Why is heat included on a disaster calendar?

Extreme heat is a major public-health hazard and can combine with power outages, wildfire risk, and vulnerable household needs.

What should I do first during a heat alert?

Confirm official local guidance, reduce exposure during peak hours, hydrate, cool indoor spaces, and check vulnerable people.