When will the power be back in Waltham, MA?

Waltham is a city of about 65,849 residents in Middlesex County.

Eversource has reported outages for Waltham by name on its own public outage map (most recently observed 2026-09-18) — so when Waltham 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 Waltham:

• 02451
• 02452
• 02453
• 02454

Checking a ZIP goes straight to the address-level view for that area.

Around Waltham: the closest other places we track are Watertown, about 4 miles to the east; Newton, about 4 miles to the southeast; Cambridge, about 6 miles to the east; and Somerville, about 7 miles to the east. Also nearby: Medford (7 mi E), Woburn (8 mi NE), Everett (10 mi E), Malden (10 mi E), Melrose (10 mi NE), Chelsea (11 mi E), Framingham (11 mi SW) and Boston (12 mi E).

Looking further out, the nearest place we track is: north toward Lowell (18 mi); northeast toward Peabody (17 mi); east toward Revere (13 mi); southeast toward Quincy (15 mi); south toward North Attleborough (29 mi); southwest toward Franklin (23 mi); west toward Marlborough (16 mi); and northwest toward Nashua, NH (28 mi).

Waltham's last tracked outage began Sep 26, peaked at 1,007 customers out, and was restored in 2 hours. Across the 4 outages tracked here, the typical (median) restoration ran 2 hours.

• Sep 26 — 1,007 customers out, restored in 2 hours
• Sep 24 — 29 customers out, restored in 40 minutes
• Sep 10 — 709 customers out, restored in 8 hours
• Sep 9 — 65 customers out, restored in an hour