Glendora

City in Los Angeles County

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Report created October 27, 2026 at www.firezones.info/community/30014/glendora

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    41% Very High

    Most of the Very High land is in the Local Responsibility Area, where the City of Glendora adopts the zones CAL FIRE recommends.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    45% has burned

    Most recently the 2021 Dalton Fire, which burned 1 acre here, one of 28 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    48% Extreme

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

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Land by hazard class

  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 1 April 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

Largest fires

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

And 18 smaller fires. 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

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 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

Nearby areas

ZIP codes in Glendora

Neighboring communities

  1. Glendora 41% Very High · this area
  2. Azusa 27% Very High
  3. Charter Oak No hazard zones
  4. Citrus No hazard zones
  5. Covina <1% Moderate · <1% Very High
  6. San Dimas 32% Very High