Live record · within 100 km (62 mi) · M2.5+
Earthquakes near Westmont
In the last 30 days there were 7 earthquakes of magnitude 2.5 or larger within 100 km (62 mi) of Westmont, California, and 0 in the last 24 hours. The strongest was a magnitude 3.8, 66 km (41 mi) NW of Westmont, on 2026-09-30.
Earthquakes M2.5+ within 100 km
- Last 24 hours0
- Last 7 days0
- Last 30 days7
- Last year61
- Last 5 years313
M1+ in the last 7 days: 23. Methodology
01 — History
Earthquakes per month near Westmont
125 earthquakes of magnitude 2.5 or larger within 100 km of Westmont in the last 24 months. The busiest month was Dec 2025, with 14.
02 — Recent
Recent earthquakes near Westmont
| Magnitude | Location | Distance | Depth | Time |
|---|---|---|---|---|
| 3.2 | 2 km SW of Signal Hill, CA | 20 km / 13 mi | depth 12 km | |
| 2.7 | 2 km WNW of Fontana, CA | 78 km / 48 mi | depth 6 km | |
| 2.5 | 31 km SW of Dana Point, CA | 82 km / 51 mi | depth 11 km | |
| 2.8 | 32 km SW of Dana Point, CA | 82 km / 51 mi | depth 17 km | |
| 3.5 | 31 km SW of Dana Point, CA | 82 km / 51 mi | depth 11 km | |
| 3.8 | 4 km SE of Piru, CA | 66 km / 41 mi | depth 10 km | |
| 3.6 | 7 km WSW of Hermosa Beach, CA | 19 km / 12 mi | depth 12 km |
03 — Questions
Earthquakes in Westmont, answered
Was there an earthquake in Westmont today?
No earthquake of magnitude 2.5 or larger was recorded within 100 km of Westmont in the last 24 hours. Smaller ones can still occur. The home page lists them when you choose “All” magnitudes.
Are earthquakes common near Westmont?
Over the last five years there were 313 earthquakes of magnitude 2.5 or larger within 100 km of Westmont, an average of 63 a year. 61 occurred in the last 12 months. That is close to the five-year average.
What was the largest earthquake near Westmont in five years?
A magnitude 5.1 on Aug 20, 2023, 21:41 UTC, 97 km (60 mi) WNW of Westmont, at a depth of 5 km. See this earthquake
Counts describe past activity within 100 km of the city centre. They are not a forecast or a risk assessment. Data updated . Source: USGS.
05 — Embed
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