ZIP 91731 recorded 112 fire and hazmat incidents in 2025, 615 across 2021–2025. Primary county: Los Angeles County, CA. FEMA NRI rates wildfire risk here as Very High.
615 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 138 | |
| 2022 | 103 | |
| 2023 | 137 | |
| 2024 | 125 | |
| 2025 | 112 |
Jan peaks. Mar dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 91731 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Outside rubbish fire, other | 110 | 17.9% | |
| 2 | Outside rubbish, trash or waste fire | 99 | 16.1% | |
| 3 | Trash or rubbish fire, contained | 72 | 11.7% | |
| 4 | Dumpster or other outside trash receptacle fire | 57 | 9.3% | |
| 5 | Fire, other | 51 | 8.3% |
For the 6 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 91731 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 19 | 15.2% | |
| 2 | Outside area, other | 15 | 12.0% | |
| 3 | Other | 14 | 11.2% | |
| 4 | Engine area, running gear, wheel area | 13 | 10.4% | |
| 5 | Vehicle area, other | 8 | 6.4% | |
| 6 | Highway, parking lot, street: on or near | 7 | 5.6% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 6 | 4.8% | |
| 8 | Storage area, other | 5 | 4.0% | |
| 9 | All other areas | 38 | 30.4% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 32 | 25.6% | |
| 2 | Heat source: other | 26 | 20.8% | |
| 3 | Arcing | 14 | 11.2% | |
| 4 | Heat from powered equipment, other | 12 | 9.6% | |
| 5 | Hot or smoldering object, other | 9 | 7.2% | |
| 6 | Spark, ember or flame from operating equipment | 8 | 6.4% | |
| 7 | Radiated, conducted heat from operating equipment | 3 | 2.4% | |
| 8 | Cigarette | 3 | 2.4% | |
| 9 | All other sources | 18 | 14.4% |
Largest single-incident losses in ZIP 91731 across 2021–2025. These 8 fires alone account for 221% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $1,000,000 | Building fires | 2025 | Major |
| 2 | $713,900 | Fires in structures other than in a building | 2023 | Major |
| 3 | $300,000 | Building fires | 2022 | Major |
| 4 | $250,000 | Building fires | 2021 | Major |
| 5 | $250,000 | Building fires | 2023 | Major |
| 6 | $200,000 | Building fires | 2022 | Significant |
| 7 | $200,000 | Building fires | 2023 | Significant |
| 8 | $150,000 | Building fires | 2024 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 91731.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | El Monte | 597 | |
| 2 | Rosemead | 17 | |
| 3 | Temple City | 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 — 615 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.