ZIP 91803 recorded 121 fire and hazmat incidents in 2025, 416 across 2021–2025. Primary county: Los Angeles County, CA. FEMA NRI rates wildfire risk here as Very High.
416 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 46 | |
| 2022 | 108 | |
| 2023 | 133 | |
| 2024 | 8 | |
| 2025 | 121 |
Aug peaks. May dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 91803 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Hazardous condition, other | 91 | 21.9% | |
| 2 | Power line down | 48 | 11.5% | |
| 3 | Carbon monoxide incident | 33 | 7.9% | |
| 4 | Gas leak (natural gas or LPG) | 30 | 7.2% | |
| 5 | Building fires | 29 | 7.0% |
For the 6 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 91803 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 12 | 12.1% | |
| 2 | Outside area, other | 11 | 11.1% | |
| 3 | Undetermined | 10 | 10.1% | |
| 4 | Cooking area, kitchen | 8 | 8.1% | |
| 5 | Highway, parking lot, street: on or near | 7 | 7.1% | |
| 6 | Other | 6 | 6.1% | |
| 7 | Open area - outside; included are farmland, field | 6 | 6.1% | |
| 8 | Vehicle area, other | 5 | 5.1% | |
| 9 | All other areas | 34 | 34.3% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 52 | 52.5% | |
| 2 | Arcing | 11 | 11.1% | |
| 3 | Heat from powered equipment, other | 7 | 7.1% | |
| 4 | Hot or smoldering object, other | 4 | 4.0% | |
| 5 | Heat source: other | 3 | 3.0% | |
| 6 | Hot ember or ash | 3 | 3.0% | |
| 7 | Cigarette | 3 | 3.0% | |
| 8 | Heat from direct flame, convection currents | 3 | 3.0% | |
| 9 | All other sources | 13 | 13.1% |
Largest single-incident losses in ZIP 91803 across 2021–2025. These 6 fires alone account for 6475% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $400,000 | Building fires | 2022 | Major |
| 2 | $60,000 | Building fires | 2021 | Significant |
| 3 | $25,000 | Building fires | 2023 | Significant |
| 4 | $18,000 | Building fires | 2022 | Significant |
| 5 | $8,000 | Mobile property (vehicle) fire, other | 2025 | Significant |
| 6 | $7,000 | Outside equipment fire | 2022 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 91803.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | Alhambra | 413 | |
| 2 | Monterey Park | 1 | |
| 3 | San Gabriel | 1 | |
| 4 | South Pasadena | 1 |
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 — 416 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.