Illinois earthquakes

Between Oct 28, 2025 and Oct 28, 2026, the USGS recorded 4 earthquakes of magnitude 2.5 or greater in or near Illinois. The largest was M 3.8, 4 km NW of Ohlman, Illinois, on Jan 20, 2026. 0 happened in the past 7 days.

This is not an early-warning system. For tsunami warnings see tsunami.gov; for emergencies follow local authorities.

Past 7 days

Updated Oct 28, 2026, 8:25 AM EDT (USGS snapshot)

No M 2.5+ earthquakes in or near Illinois in the past 7 days.

By size, past year

M 2.5–2.9

M 3–3.9

M 4–4.9

M 5–5.9

M 6+

Latest 50 earthquakes (M 2.5+)

Illinois: latest M 2.5+ earthquakes in the past year
Magnitude	Location	Time	Depth
M 2.6	9 km WSW of Equality, Illinois	Oct 16, 2026, 4:25 AM EDT 12 days ago	2.9 km
M 2.9	21 km ENE of Kenilworth, Illinois	Jul 8, 2026, 3:38 PM EDT 112 days ago	5.0 km
M 3.5	6 km NE of West Salem, Illinois	Jun 29, 2026, 3:05 AM EDT 121 days ago	19.0 km
M 3.8	4 km NW of Ohlman, Illinois	Jan 20, 2026, 2:27 AM EST 281 days ago	8.8 km

Largest of the past year

Illinois: 10 largest earthquakes, past 365 days
Magnitude	Location	Time	Depth
M 3.8	4 km NW of Ohlman, Illinois	Jan 20, 2026, 2:27 AM EST 281 days ago	8.8 km
M 3.5	6 km NE of West Salem, Illinois	Jun 29, 2026, 3:05 AM EDT 121 days ago	19.0 km
M 2.9	21 km ENE of Kenilworth, Illinois	Jul 8, 2026, 3:38 PM EDT 112 days ago	5.0 km
M 2.6	9 km WSW of Equality, Illinois	Oct 16, 2026, 4:25 AM EDT 12 days ago	2.9 km

Month by month

M 2.5+ earthquakes per month (UTC)
Month	Quakes
October 2026	1
July 2026	1
June 2026	1
January 2026	1

Source: USGS ComCat via the FDSN event web service, snapshot Oct 28, 2026. Matched by the USGS place name.

River gauges in Illinois

Mississippi River at Thebes, IL · 13.14 ft · 148,000 cfs
Ohio River at Olmsted, IL · 12.65 ft · 74,500 cfs
Mississippi River at Dam 13 near Fulton, IL · 4.51 ft

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