The United States performed nuclear weapons tests from 1945 to 1992 as part of the nuclear arms race. By official count, there were 1,054 nuclear tests conducted, including 215 atmospheric and underwater tests.

Most of the tests took place at the Nevada Test Site (NNSS/NTS), the Pacific Proving Grounds in the Marshall Islands or off Kiritimati Island in the Pacific, plus three in the Atlantic Ocean. Ten other tests took place at various locations in the United States, including Alaska, Nevada (outside of the NNSS/NTS), Colorado, Mississippi, and New Mexico.

United States nuclear tests

Timeline

Graphical timeline of United States atmospheric nuclear weapons tests

Notes

References

Sources


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