When will the power be back in O'Fallon, MO?
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 95,355 residents in St. Charles County.
Ameren, Cuivre River Electric Cooperative and SEMO Electric Cooperative have reported outages for O'Fallon by name on their own public outage map (most recently observed 2026-09-18) — 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 Dardenne Prairie, about 2 miles to the south; Lake St. Louis, about 4 miles to the west; St. Peters, about 6 miles to the east; and Wentzville, about 8 miles to the west. Also nearby: St. Charles (11 mi E), Chesterfield (12 mi SE), Maryland Heights (14 mi E), Wildwood (14 mi S), Ellisville (15 mi SE), Bridgeton (16 mi E), Ballwin (16 mi SE), and Town and Country (17 mi SE).
Looking further out, the nearest place we track is: north toward Jacksonville, IL (70 mi); northeast toward Godfrey, IL (30 mi); east toward Hazelwood (18 mi); southeast toward Creve Coeur (17 mi); south toward Eureka (20 mi); southwest toward Washington (23 mi); west toward Fulton (66 mi); and northwest toward Troy (19 mi).
Who serves O'Fallon?
We track live outage data from Ameren and Cuivre River Electric Cooperative ↗ in St. Charles County — but several utilities can serve one county, so confirm your own by searching your address on the live map.
O'Fallon's last tracked outage began Sep 17, peaked at 57 customers out, and was restored in 5 hours.
- Sep 17 — 57 customers out, restored in 5 hours
County context: across all of St. Charles County, federal outage records (EAGLE-I, 2014–2025) show outages of 200+ customers typically restored in about 2.5 hr. The full record for St. Charles County
Common questions
Does this page show O'Fallon specifically, or the whole county?
Both, and for O'Fallon we have the city-level view: Ameren, Cuivre River Electric Cooperative and SEMO Electric Cooperative have published outages for O'Fallon under its own name, most recently seen on 2026-09-18. When O'Fallon is affected, you get its own customers-out count and restoration time, with the St. Charles County county-wide total shown separately as context. Don't add the two together — the county figure already includes O'Fallon.
