San Jose, California Internet Outage Today
Live San Jose internet outage reports and how households here get online.
Weather data by Open-Meteo.com
No internet outage reports in San Jose, California in the last 24 hours
Internet access in San Jose
Wired service is unusually common in San Jose: 84.4% of households have cable, fiber or DSL, against 75.6% nationally.
8 home internet providers reach at least 5% of the city's 371,578 homes. Satellite service is excluded. Source: FCC National Broadband Map, December 2025 data.
- Broadband subscription: 95.4% of 328,550 households (California 93.5%, US 91%). Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Fiber to the home: available at 37.3% of 371,578 homes (US 55.9%). Gigabit plans: 95.5%. Cable: 97.4%.
- Home internet providers filing coverage here: Xfinity (98% of homes), Etheric Communications, LLC. (87% of homes), AT&T (86% of homes), Ridge Wireless Inc. (61% of homes), Sail Internet Holdings LLC (42% of homes). 5G home or mobile coverage: 90.3% of the city area. Source: FCC National Broadband Map, Dec 2025 data
- Rank: 4th of 20 California cities we track (Fremont highest at 96.8%, Fresno lowest at 88.7%).
- Cable, fiber or DSL: 84.4%. Cellular data only: 8.5% (US 11.5%). Satellite: 5.6%. Wired lines are more common here than nationally.
- No internet subscription: 4.5%. No computer or smartphone: 2.3%. Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Grid reliability, 2024: Pacific Gas & Electric (PG&E) customers averaged 509 minutes without power. Outages that long outlast the batteries in street-side cable and fiber cabinets. Source: EIA Form 861, 2024 reliability data
- Santa Clara County storm record since 2015: 198 reports; power outages named in 16 episodes. Source: NOAA Storm Events Database
Source: Census ACS 2020–2024.
Source: FCC National Broadband Map, December 2025 data.
San Jose is 2nd of 6 nearby cities on this measure. Source: Census ACS 2020–2024.
| City | Widest wired provider | Fiber | Gigabit plans | No internet subscription |
|---|---|---|---|---|
| San Jose, CA | Xfinity (98%) | 37.3% | 95.5% | 4.5% |
| Fremont, CA | Tekify, LLC (99%) | 33.1% | 97.7% | 3.2% |
| Oakland, CA | Xfinity (99%) | 81.3% | 95.4% | 8.3% |
| San Francisco, CA | Xfinity (98%) | 44% | 73.6% | 6.9% |
| Modesto, CA | UnWired Broadband Holding LLC (100%) | 24.6% | 76.3% | 7.9% |
Source: FCC National Broadband Map, December 2025 data; Census ACS 2020–2024.
Checked September 2026.
Internet providers in San Jose
Share of San Jose homes each provider reported it can serve, in FCC filings for December 2025: Xfinity (98%), Etheric Communications, LLC. (87%), AT&T (86%), Verizon (66%), and T-Mobile Home Internet (62%). Check your own address on the FCC National Broadband Map. If the lights are out too, see San Jose power outages.
Router checks: internet outage guide. Nationwide: US internet outages.
Who to check first in San Jose
The providers with the widest reported coverage in San Jose. Start with the one on your bill.
Xfinity in San Jose
Reach: reports service to 98% of San Jose homes. Network: Cable (with fiber in some areas), run by Comcast.
Where to check: Sign in to the Xfinity app or the Status Center on xfinity.com to see outages reported for your address.
Support: 800-934-6489
AT&T in San Jose
Reach: reports service to 86% of San Jose homes. Network: Fiber, DSL/IPBB and AT&T Internet Air (fixed wireless), run by AT&T.
Where to check: Use AT&T's outage check in the Smart Home Manager app or on att.com after signing in.
Support: 800-288-2020
Backup internet options in San Jose
Xfinity (98% of homes) and Etheric Communications, LLC. (87%) each report service to more than half of San Jose homes. At an address that can get both, they run on separate lines.
Home 5G and fixed-wireless plans from Verizon (66%) and T-Mobile Home Internet (62%) report coverage of San Jose homes (Verizon’s figure combines Fios fiber and 5G Home). They run over cell towers rather than cable or fiber, so they can work when a wired network is down. Cell coverage by area is 99.1% for 4G LTE and 90.3% for 5G.
About 8.5% of San Jose households, roughly 27,900 homes, get online only through a cell plan. For them a mobile outage is an internet outage.
Power and weather behind internet outages in San Jose
Pacific Gas & Electric (PG&E) customers averaged 509 minutes without power in 2024, across 2.15 interruptions each, against 280 minutes for California as a whole. Cable nodes and fiber cabinets run on batteries that last hours, not days, so a long power cut can take internet down even for homes whose own power has returned. See San Jose power outages when both go out together.
Santa Clara County logged 198 storm reports since 2015, most often flood, hail, and debris flow. Reports peak in February. Power outages were named in 16 of those storm episodes. Wind, ice and flooding damage poles and buried lines, which is how a storm turns into an internet outage as well as a power outage.
Fiber reports reach 37.3% of San Jose homes, cable 97.4% and copper lines 60.1%. Cable is the main wired technology here. One neighborhood node feeds many homes, so a node fault usually shows up as a whole street offline at once.
San Jose internet outage questions
Does a cell network outage take down home internet in San Jose?
For the 8.5% of San Jose households that rely only on a mobile data plan, yes. The 84.4% with cable, fiber or DSL are not affected.
What can I use for internet in San Jose when my provider is down?
A phone hotspot: 4G LTE covers 99.1% of San Jose by area and 5G 90.3%. Home 5G plans: Verizon (66%) and T-Mobile Home Internet (62%). Where both Xfinity and Etheric Communications, LLC. are available, the second wired line is a backup.
Can a power outage take internet down in San Jose?
Yes, a long power cut can. Pacific Gas & Electric (PG&E) customers averaged 509 minutes without power in 2024. NOAA records name power outages in 16 storm episodes in Santa Clara County since 2015.
Is fiber or gigabit internet available in San Jose?
Fiber is reported at 37.3% of San Jose homes (US 55.9%, California 40.6%), and plans of 1 Gbps or faster at 95.5% (US 69.2%).
How many San Jose households have no home internet?
About 14,800 of 328,550 households, or 4.5%, have no internet subscription of any kind, and another 8.5% rely only on a cell plan (Census ACS 2020–2024).
Which internet provider covers the most homes in San Jose?
Xfinity, at 98% of homes in its FCC filing. Fiber reaches 37.3% of San Jose homes and gigabit plans 95.5%.
ISP outage status for San Jose
More outage pages for San Jose and nearby
Other outage types in San Jose
Internet Outages in cities near San Jose
- Fremont, CA 15 mi
- Oakland, CA 38 mi
- San Francisco, CA 42 mi
- Modesto, CA 53 mi
- Stockton, CA 54 mi
- Sacramento, CA 89 mi
Report counts are user-submitted; other figures name their official source. How our data works
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