Monrovia

City in Los Angeles County

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Report created October 27, 2026 at www.firezones.info/community/48648/monrovia

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    33% Very High

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

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    57% has burned

    Most recently the 2025 Eaton Fire, which burned 63 acres here, one of 23 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    64% 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 2,864 acres · <1 state, 2,864 local 33%
  2. High 172 acres · Local Responsibility Area 2%
  3. Moderate 165 acres · Local Responsibility Area 2%
  4. Non-wildland 2,531 acres · Local Responsibility Area 29%
  5. Not mapped by CAL FIRE 3,063 acres · Mostly federal land 35%

8,795 acres of land in all, <1 in the State Responsibility Area and 5,732 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. 2020 Bobcat Fire Of 115,998 acres in all 3,709 acres
  2. 1958 Unnamed fire Of 13,944 acres in all 2,982 acres
  3. 1953 Monrovia Peak Fire Of 14,061 acres in all 2,790 acres
  4. 1954 Monrovia Peak Fire Of 13,870 acres in all 2,695 acres
  5. 1924 San Gabriel Fire Of 43,050 acres in all 1,938 acres
  6. 1980 Stable Fire Of 6,049 acres in all 1,577 acres
  7. 1900 Big Fire Of 16,961 acres in all 764 acres
  8. 2016 Fish Fire Of 4,246 acres in all · Cause: Miscellaneous 611 acres
  9. 1968 Canyon Inn Fire Of 19,056 acres in all 461 acres
  10. 1917 Hastings Ranch Fire 349 acres

And 13 smaller fires. In all, 5,056 acres of Monrovia 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 Monrovia

Neighboring communities

  1. Monrovia 33% Very High · this area
  2. Arcadia 8% Very High
  3. Azusa 27% Very High
  4. Bradbury 81% Very High
  5. Duarte 20% Very High
  6. El Monte <1% High
  7. Irwindale 5% High
  8. Mayflower Village No hazard zones
  9. North El Monte No hazard zones
  10. Sierra Madre 55% Very High
  11. South Monrovia Island No hazard zones