Fontana

City in San Bernardino County

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Report created October 27, 2026 at www.firezones.info/community/24680/fontana

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    15% Very High

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

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    18% has burned

    Most recently the 2025 Pyrite Fire, which burned 61 acres here, one of 38 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    20% Elevated · 1% 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 4,090 acres · 4 state, 4,086 local 15%
  2. High 1,229 acres · Local Responsibility Area 4%
  3. Moderate 586 acres · Local Responsibility Area 2%
  4. Non-wildland 21,802 acres · Local Responsibility Area 79%
  5. Not mapped by CAL FIRE 2 acres · Mostly federal land <1%

27,710 acres of land in all, 4 in the State Responsibility Area and 27,703 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. 1988 Texas Fire Of 12,096 acres in all · Cause: Arson 2,072 acres
  2. 1988 Unnamed fire Of 5,244 acres in all 1,939 acres
  3. 1970 Unnamed fire Of 37,472 acres in all · Cause: Miscellaneous 1,122 acres
  4. 2003 Grand Prix Fire Of 50,618 acres in all · Cause: Arson 944 acres
  5. 1983 Scenic Fire Of 1,328 acres in all · Cause: Arson 828 acres
  6. 1996 Philadelphia Fire Of 1,835 acres in all 794 acres
  7. 1980 Summit Fire Of 4,368 acres in all 648 acres
  8. 1958 Pole Line Fire Of 3,960 acres in all 544 acres
  9. 1998 Sierra Fire Of 580 acres in all · Cause: Equipment use 503 acres
  10. 1974 Sunnyslope Fire Of 1,820 acres in all 475 acres

And 28 smaller fires. In all, 5,041 acres of Fontana 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 Fontana

Neighboring communities

  1. Fontana 15% Very High · this area
  2. Bloomington 11% Very High
  3. Jurupa Valley 22% Very High
  4. Ontario No hazard zones
  5. Rancho Cucamonga 30% Very High
  6. Rialto 14% High · <1% Very High