San Ysidro Fire

Wildfire in San Diego County, July 1975

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Printed October 28, 2026 from www.firezones.info/fire/2913/san-ysidro-fire-1975

Key facts

Started July 14, 1975
Contained Not recorded
Burned 10,642 acres
5th largest fire of 1975
Cause Miscellaneous
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Where it burned

County

  1. San Diego County 10,639 acres

Acres are the land the fire burned in each county and community, and places where it burned less than an acre are not listed. Communities are cities, towns and the unincorporated places the Census Bureau names, so land outside any of them is counted only in its county.

The same land, other fires

Burned before

  1. 1919 Unnamed fire 8,653 acres in total 151 acres shared
  2. 1928 Unnamed fire 103 acres in total · Cause: Miscellaneous 76 acres shared
  3. 1954 San Ysidro Fire 6,960 acres in total · Cause: Miscellaneous 2,812 acres shared
  4. 1955 San Ysidro Fire 357 acres in total 213 acres shared

Burned again

  1. 1981 Culp Fire 1,113 acres in total · Cause: Miscellaneous 74 acres shared
  2. 1993 Grade Fire 1,495 acres in total 179 acres shared
  3. 2002 Pines Fire 61,691 acres in total · Cause: Power lines 6,438 acres shared
  4. 2011 Eagle Fire 13,993 acres in total · Cause: Arson 56 acres shared
  5. 2017 Montezuma Fire 65 acres in total · Cause: Vehicle 15 acres shared

Acres are the land each fire shares with the San Ysidro Fire, and fires that shared less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history

Sources

Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Building damage
CAL FIRE Damage Inspection
Updated 19 October 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data