This page summarizes earthquakes in Riverside County (United States). The most recently recorded event was a magnitude M1.0 earthquake near Riverside County on 2026-06-15 20:57:18 UTC. All event lists and map markers are limited to the last 30 days.
In 2026, Riverside County recorded 1354 earthquakes within United States. The average magnitude was M1.10. The strongest event reached M4.9.
Based on the number of recorded earthquakes in 2026, Riverside County is currently among the Top 5 most active regions in United States (rank #2 by count).
