About what share of U.S. wildfires are started by people?

Over 85 percent.

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  1. About 40 percent
  2. Over 85 percent ✔
  3. About 10 percent

Why: Human activity causes most U.S. wildfires, so prevention matters.

Huh, didn't know that: Human activity causes most U.S. wildfires, so prevention matters.

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People spark most trouble!
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References

Answer: Over 85 percent. Human activity causes most U.S. wildfires, so prevention matters.

  1. Wildfire en.wikipedia.org/wiki/Wildfire
    Over 85% of wildfires in the United States are started by human activity.
    Checked 2026-11-07.

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