ZIP 91963 recorded 18 fire and hazmat incidents in 2025, 100 across 2021–2025. Primary county: San Diego County, CA. FEMA NRI rates wildfire risk here as Very High.
100 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 17 | |
| 2022 | 19 | |
| 2023 | 23 | |
| 2024 | 23 | |
| 2025 | 18 |
Aug peaks. Dec dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 91963 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Brush, or brush and grass mixture fire | 28 | 28.0% | |
| 2 | Outside rubbish, trash or waste fire | 13 | 13.0% | |
| 3 | Grass fire | 9 | 9.0% | |
| 4 | Passenger vehicle fire | 8 | 8.0% | |
| 5 | Building fires | 6 | 6.0% |
For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 91963 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 6 | 19.4% | |
| 2 | Open area - outside; included are farmland, field | 4 | 12.9% | |
| 3 | Cargo/trunk area - all vehicles | 3 | 9.7% | |
| 4 | Engine area, running gear, wheel area | 3 | 9.7% | |
| 5 | Outside area, other | 3 | 9.7% | |
| 6 | Vehicle area, other | 2 | 6.5% | |
| 7 | Other | 1 | 3.2% | |
| 8 | Entrance way, lobby | 1 | 3.2% | |
| 9 | All other areas | 8 | 25.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 15 | 48.4% | |
| 2 | Heat source: other | 3 | 9.7% | |
| 3 | Match | 3 | 9.7% | |
| 4 | Cigarette lighter | 2 | 6.5% | |
| 5 | Heat from powered equipment, other | 1 | 3.2% | |
| 6 | Spark, ember or flame from operating equipment | 1 | 3.2% | |
| 7 | Radiated, conducted heat from operating equipment | 1 | 3.2% | |
| 8 | Arcing | 1 | 3.2% | |
| 9 | All other sources | 4 | 12.9% |
Largest single-incident losses in ZIP 91963 across 2021–2025. These 8 fires alone account for 2617% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $2,000,000 | Brush, or brush and grass mixture fire | 2023 | Major |
| 2 | $210,000 | Fire in motor home, camper, recreational vehicle | 2023 | Significant |
| 3 | $50,000 | Building fires | 2025 | Significant |
| 4 | $30,000 | Camper or recreational vehicle (RV) fire | 2025 | Significant |
| 5 | $12,000 | Passenger vehicle fire | 2021 | Significant |
| 6 | $10,000 | Building fires | 2024 | Significant |
| 7 | $9,090 | Building fires | 2024 | Significant |
| 8 | $8,000 | Passenger vehicle fire | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 91963.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Potrero | 68 |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 100 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.