Live record · within 100 km (62 mi) · M2.5+
Earthquakes near San Dimas
In the last 30 days there were 10 earthquakes of magnitude 2.5 or larger within 100 km (62 mi) of San Dimas, California, and 0 in the last 24 hours. The strongest was a magnitude 3.8, 94 km (58 mi) WNW of San Dimas, on 2026-09-30.
Earthquakes M2.5+ within 100 km
- Last 24 hours0
- Last 7 days0
- Last 30 days10
- Last year69
- Last 5 years330
M1+ in the last 7 days: 37. Methodology
01 — History
Earthquakes per month near San Dimas
147 earthquakes of magnitude 2.5 or larger within 100 km of San Dimas in the last 24 months. The busiest month was Sep 2026, with 12.
02 — Recent
Recent earthquakes near San Dimas
| Magnitude | Location | Distance | Depth | Time |
|---|---|---|---|---|
| 2.8 | 3 km NNW of San Jacinto, CA | 84 km / 52 mi | depth 14 km | |
| 2.7 | 4 km E of San Jacinto, CA | 90 km / 56 mi | depth 12 km | |
| 3.2 | 2 km SW of Signal Hill, CA | 50 km / 31 mi | depth 12 km | |
| 2.7 | 2 km WNW of Fontana, CA | 30 km / 19 mi | depth 6 km | |
| 2.6 | 4 km NNW of Big Bear City, CA | 89 km / 56 mi | depth 4 km | |
| 2.5 | 31 km SW of Dana Point, CA | 94 km / 58 mi | depth 11 km | |
| 2.8 | 32 km SW of Dana Point, CA | 94 km / 59 mi | depth 17 km | |
| 3.5 | 31 km SW of Dana Point, CA | 94 km / 58 mi | depth 11 km | |
| 3.8 | 4 km SE of Piru, CA | 94 km / 58 mi | depth 10 km | |
| 3.6 | 7 km WSW of Hermosa Beach, CA | 68 km / 42 mi | depth 12 km |
03 — Questions
Earthquakes in San Dimas, answered
Was there an earthquake in San Dimas today?
No earthquake of magnitude 2.5 or larger was recorded within 100 km of San Dimas in the last 24 hours. Smaller ones can still occur. The home page lists them when you choose “All” magnitudes.
Are earthquakes common near San Dimas?
Over the last five years there were 330 earthquakes of magnitude 2.5 or larger within 100 km of San Dimas, an average of 66 a year. 69 occurred in the last 12 months. That is close to the five-year average.
What was the largest earthquake near San Dimas in five years?
A magnitude 4.7 on Sep 12, 2024, 14:28 UTC, 93 km (58 mi) W of San Dimas, at a depth of 11 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.
04 — Nearby
Nearby places
05 — Embed
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