Latest Earthquakes near San Dimas
Live map and archive of seismic activity in and around San Dimas, California.
San Dimas Activity Report
M1.5+Largest Measured Events
Filtered Statistics
Filtered Statistics
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Latest earthquakes in nearby cities
Live map and archive of seismic activity in and around San Dimas, California.
Common Questions about Earthquakes near San Dimas
Is San Dimas in an earthquake-prone area?
San Dimas and the surrounding area may experience seismic activity of varying strength. The map above helps you review nearby recent events and get a quick sense of local seismic patterns.
When was the last earthquake near San Dimas?
Use the filters above to check the latest earthquakes near San Dimas. The past-hour, past-day, and past-7-day views are especially helpful if you are monitoring current activity.
What is the largest earthquake recorded near San Dimas?
Switch to a wider custom date range to look further back in the archive. That makes it much easier to identify the strongest historical earthquakes around San Dimas.
How far back does the earthquake data go?
Our broader archive reaches back to 1900. To keep performance stable, the visible list is capped at the 2000 most relevant events for your current filters.
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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Oct 1, 2026, 10:54 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.