Latest Earthquakes near Ontario
Live map and archive of seismic activity in and around Ontario, California.
Ontario Activity Report
M1.5+Largest Measured Events
Filtered Statistics
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Common Questions about Earthquakes near Ontario
Is Ontario in an earthquake-prone area?
Ontario and the surrounding California region 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 Ontario?
Use the filters above to check the latest earthquakes near Ontario. 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 Ontario?
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 Ontario.
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.
This page is automatically generated with data from USGS, is not quality controlled and may not update in a timely manner. You accept all risks and responsibility for losses, damages, costs and other consequences resulting directly or indirectly from using this site and any information or material available from it. USGS.