Glendora

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  1. Very High 5,150 acres · 7 state, 5,143 local 41%
  2. High 579 acres · Local Responsibility Area 5%
  3. Moderate 555 acres · Local Responsibility Area 4%
  4. Non-wildland 3,806 acres · Local Responsibility Area 30%
  5. Not mapped by CAL FIRE 2,496 acres · Mostly federal land 20%

  12,586 acres of land in all, 7 in the State Responsibility Area and 10,082 in the Local. State zones are the ones the State Fire Marshal designated, in effect since April 1, 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

• Fire history

  The 10 largest of 28 fires that burned here

  Map
  1. 2002 Williams Fire 38,119 acres in total · Cause: Arson 3,406 acres here
  2. 1919 San Gabriel Fire 54,610 acres in total 2,674 acres here
  3. 1960 Unnamed fire 22,736 acres in total 2,635 acres here
  4. 2014 Colby Fire 1,952 acres in total · Cause: Campfire 1,458 acres here
  5. 1968 Canyon Inn Fire 19,056 acres in total 1,313 acres here
  6. 1962 Unnamed fire 861 acres in total 454 acres here
  7. 1968 Easley Fire 589 acres in total 445 acres here
  8. 1929 Glendora Hill No. 85 Fire 345 acres here
  9. 1981 Mull Fire 668 acres in total 288 acres here
  10. 1960 Unnamed fire 198 acres here

  And 18 smaller fires. The most recent was the 2021 Dalton Fire, which burned 1 acre here. In all, 5,722 acres of Glendora have burned. Acres are the land each fire burned here, and fires that crossed 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