When will the power be back in Rancho Cucamonga, CA?
Our restoration forecast is independent and unofficial, never the utility's commitment. How it works · How accurate it has been
Rancho Cucamonga is a city of about 176,675 residents in San Bernardino County.
Southern California Edison has reported outages for Rancho Cucamonga by name on its own public outage map (most recently observed 2026-08-16) — so when Rancho Cucamonga is affected, this page can show the city's own customers-out count and restoration time rather than only the county-wide total.
ZIP codes in Rancho Cucamonga:
Checking a ZIP goes straight to the address-level view for that area.
Around Rancho Cucamonga: the closest other places we track are Upland, about 6 miles to the west; Fontana, about 6 miles to the east; Ontario, about 7 miles to the south; and Claremont, about 9 miles to the west. Also nearby: Montclair (9 mi SW), Rialto (10 mi E), Jurupa Valley (10 mi SE), Eastvale (12 mi S), Chino (12 mi SW), La Verne (12 mi W), Pomona (13 mi SW) and San Dimas (14 mi W).
Looking further out, the nearest place we track is: north toward Adelanto (32 mi); northeast toward Hesperia (23 mi); east toward Colton (15 mi); southeast toward Grand Terrace (16 mi); south toward Norco (14 mi); southwest toward Chino Hills (16 mi); and west toward Glendora (16 mi).
Who serves Rancho Cucamonga?
We track live outage data from Southern California Edison in San Bernardino County — but several utilities can serve one county, so confirm your own by searching your address on the live map. Colorado River Indian Irrigation Project, City of Colton, Bear Valley Electric Service and 4 others also serve parts of San Bernardino County — we don't yet read their own live outage maps.
Rancho Cucamonga's last tracked outage began Oct 1, peaked at 152 customers out, and was restored in 16 hours. Across the 6 outages tracked here, the typical (median) restoration ran 8 hours.
- Oct 1 — 152 customers out, restored in 16 hours
- Sep 30 — 91 customers out, restored in an hour
- Sep 29 — 86 customers out, restored in 3 hours
- Sep 27 — 92 customers out, restored in 13 hours
County context: across all of San Bernardino County, federal outage records (EAGLE-I, 2014–2025) show outages of 200+ customers typically restored in about 14 hr. The full record for San Bernardino County
Common questions
How do I check the power outage status in Rancho Cucamonga, CA?
To check your own street, search a Rancho Cucamonga ZIP code — 91701, 91729, 91730, 91737 or 91739 — and the map opens on that area.
Does this page show Rancho Cucamonga specifically, or the whole county?
Both, and for Rancho Cucamonga we have the city-level view: Southern California Edison has published outages for Rancho Cucamonga under its own name, most recently seen on 2026-08-16. When Rancho Cucamonga is affected, you get its own customers-out count and restoration time, with the San Bernardino County county-wide total shown separately as context. Don't add the two together — the county figure already includes Rancho Cucamonga.
