About Fallout Weather

Fallout Weather shows where today's winds would carry nuclear fallout from potential targets near you, so that preparedness-minded people can understand their own situation.

Why it exists

Most fallout maps are fixed pictures drawn for one imagined day. But fallout follows the wind, and the wind changes. The honest answer to "would fallout reach me?" is "it depends on the weather", so this site answers it with the weather: a live forecast of the winds from the ground to the top of a nuclear cloud.

What it is not

It is not an emergency alert system, not official guidance, not a government service and not a prediction that anything will happen. It gives no radiation dose estimates. In an emergency, follow instructions from authorities. For official preparedness advice, see Ready.gov.

How it is made

The method, the data sources and the limits of the model are set out on the how it works page. The safety guidance on this site summarizes public information from US agencies and links to it.

Who publishes it

Fallout Weather is published by Quicksilver Industries LTD. It is not a government website and is not affiliated with FEMA, the CDC, NOAA or the Department of Defense. It is also not affiliated with the Fallout video game series or its owners; "fallout" is used here in its ordinary sense of radioactive debris from a nuclear explosion.

Contact

Questions, corrections and feedback: contact@quicksilver.tech.

Last reviewed November 13, 2026.