When will the power be back in O'Fallon, IL?
Our restoration forecast is independent and unofficial, never the utility's commitment. How it works · How accurate it has been
O'Fallon is a city of about 32,169 residents in St. Clair County.
Ameren has reported outages for O'Fallon by name on its own public outage map (most recently observed 2026-07-29) — so when O'Fallon is affected, this page can show the city's own customers-out count and restoration time rather than only the county-wide total.
Around O'Fallon: the closest other places we track are Shiloh, about 3 miles to the south; Fairview Heights, about 5 miles to the west; Swansea, about 5 miles to the southwest; and Belleville, about 7 miles to the southwest. Also nearby: Collinsville (7 mi NW), Troy (9 mi N), Glen Carbon (12 mi N), East St. Louis (12 mi W), Cahokia Heights (13 mi W), Edwardsville (14 mi N), Granite City (15 mi NW) and Highland (17 mi NE).
Looking further out, the nearest place we track is: north toward Chatham (75 mi); northeast toward Taylorville (73 mi); east toward Centralia (43 mi); southeast toward Carbondale (71 mi); southwest toward Columbia (19 mi); west toward St. Louis, MO (18 mi); and northwest toward Bellefontaine Neighbors, MO (20 mi).
Who serves O'Fallon?
We track live outage data from Ameren, Southwestern Electric Cooperative, Egyptian Electric Cooperative Association, Illinois Electric Cooperatives ↗ and 1 more in St. Clair County — but several utilities can serve one county, so confirm your own by searching your address on the live map. Village of Freeburg and City of Mascoutah also serve parts of St. Clair County — we don't yet read their own live outage maps.
O'Fallon's last tracked outage began Sep 11, peaked at 32 customers out, and was restored in 4 hours.
- Sep 11 — 32 customers out, restored in 4 hours
County context: across all of St. Clair County, federal outage records (EAGLE-I, 2014–2025) show outages of 200+ customers typically restored in about 3.8 hr. The full record for St. Clair County
