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Extreme heat and cold safety: what to do

Heat waves kill more people than any other weather hazard in many countries, and extreme cold brings frostbite and carbon monoxide risks.

If you are in danger right now, call your local emergency number. Find the number for your country.

What to do

  1. In extreme heat, drink water, stay in shade or air conditioning, and check on older neighbors.
  2. In extreme cold, dress in layers and limit time outdoors.
  3. Run generators and grills outdoors only. Carbon monoxide kills.

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Zero Containment shows active extreme heat and cold events worldwide on a live map, with official alerts, distance from you, local weather and the emergency number for that location.

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General guidance compiled from public emergency-management advice. Always follow instructions from local authorities.