Fontana

Summary

• Fire hazard severity zones

  Share of the land in each CAL FIRE hazard class

  Map
  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 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 38 fires that burned here

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

  And 28 smaller fires. The most recent was the 2025 Pyrite Fire, which burned 61 acres here. 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