San Francisco, California Internet Outage Today
Live San Francisco internet outage reports and how households here get online.
Weather data by Open-Meteo.com
No internet outage reports in San Francisco, California in the last 24 hours
The most recent internet outage report from San Francisco came in 5 days ago. Over the past 90 days, San Francisco residents filed 5 internet outage reports here on 4 separate days; the busiest was October 18, with 2.
Internet access in San Francisco
Wired service is unusually common in San Francisco: 82.5% of households have cable, fiber or DSL, against 75.6% nationally.
8 home internet providers reach at least 5% of the city's 463,554 homes. Satellite service is excluded. Source: FCC National Broadband Map, December 2025 data.
- Broadband subscription: 93% of 363,970 households (California 93.5%, US 91%). Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Fiber to the home: available at 44% of 463,554 homes (US 55.9%). Gigabit plans: 73.6%. Cable: 97.4%.
- Home internet providers filing coverage here: Xfinity (98% of homes), AT&T (97% of homes), Unwired Ltd. (94% of homes), Etheric Communications, LLC. (77% of homes), Sonic Telecom, LLC (32% of homes). 5G home or mobile coverage: 49.1% of the city area. Source: FCC National Broadband Map, Dec 2025 data
- Rank: 12th of 20 California cities we track (Fremont highest at 96.8%, Fresno lowest at 88.7%).
- Cable, fiber or DSL: 82.5%. Cellular data only: 8.5% (US 11.5%). Wired lines are more common here than nationally.
- No internet subscription: 6.9%. No computer or smartphone: 3.4%. 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
- San Francisco County storm record since 2015: 104 reports; power outages named in 19 episodes. Source: NOAA Storm Events Database
Source: Census ACS 2020–2024.
Source: FCC National Broadband Map, December 2025 data.
San Francisco is 4th of 6 nearby cities on this measure. Source: Census ACS 2020–2024.
| City | Widest wired provider | Fiber | Gigabit plans | No internet subscription |
|---|---|---|---|---|
| San Francisco, CA | Xfinity (98%) | 44% | 73.6% | 6.9% |
| Oakland, CA | Xfinity (99%) | 81.3% | 95.4% | 8.3% |
| Fremont, CA | Tekify, LLC (99%) | 33.1% | 97.7% | 3.2% |
| San Jose, CA | Xfinity (98%) | 37.3% | 95.5% | 4.5% |
| Stockton, CA | UnWired Broadband Holding LLC (100%) | 28.6% | 96.1% | 8.2% |
Source: FCC National Broadband Map, December 2025 data; Census ACS 2020–2024.
Checked September 2026.
Internet providers in San Francisco
Share of San Francisco homes each provider reported it can serve, in FCC filings for December 2025: Xfinity (98%), AT&T (97%), Unwired Ltd. (94%), Etheric Communications, LLC. (77%), and T-Mobile Home Internet (72%). Check your own address on the FCC National Broadband Map. If the lights are out too, see San Francisco power outages.
Router checks: internet outage guide. Nationwide: US internet outages.
Who to check first in San Francisco
The providers with the widest reported coverage in San Francisco. Start with the one on your bill.
Xfinity in San Francisco
Reach: reports service to 98% of San Francisco 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 Francisco
Reach: reports service to 97% of San Francisco 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 Francisco
Xfinity (98% of homes) and AT&T (97%) each report service to more than half of San Francisco homes. At an address that can get both, they run on separate lines.
Home 5G and fixed-wireless plans from T-Mobile Home Internet (72%) and Verizon (67%) report coverage of San Francisco 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 82.6% for 4G LTE and 49.1% for 5G.
About 8.5% of San Francisco households, roughly 30,900 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 Francisco
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 Francisco power outages when both go out together.
San Francisco County logged 104 storm reports since 2015, most often flood, hail, and lightning. Reports peak in January. Power outages were named in 19 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 44% of San Francisco homes, cable 97.4% and copper lines 78.4%. 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 Francisco internet outage questions
Does a cell network outage take down home internet in San Francisco?
For the 8.5% of San Francisco households that rely only on a mobile data plan, yes. The 82.5% with cable, fiber or DSL are not affected.
What can I use for internet in San Francisco when my provider is down?
A phone hotspot: 4G LTE covers 82.6% of San Francisco by area and 5G 49.1%. Home 5G plans: T-Mobile Home Internet (72%) and Verizon (67%). Where both Xfinity and AT&T are available, the second wired line is a backup.
Can a power outage take internet down in San Francisco?
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 19 storm episodes in San Francisco County since 2015.
Is fiber or gigabit internet available in San Francisco?
Fiber is reported at 44% of San Francisco homes (US 55.9%, California 40.6%), and plans of 1 Gbps or faster at 73.6% (US 69.2%).
How many San Francisco households have no home internet?
About 25,100 of 363,970 households, or 6.9%, 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 Francisco?
Xfinity, at 98% of homes in its FCC filing. Fiber reaches 44% of San Francisco homes and gigabit plans 73.6%.
ISP outage status for San Francisco
Recent internet reports in San Francisco
- Internet reports in San Francisco, last 24h
- 0
- Most recent internet report here
- 5 days ago
- Internet reports across California, last 24h
- 0
- City population
- 873,965
Other outage types in San Francisco
Internet Outages in cities near San Francisco
- Oakland, CA 8 mi
- Fremont, CA 28 mi
- San Jose, CA 42 mi
- Stockton, CA 63 mi
- Sacramento, CA 75 mi
- Modesto, CA 78 mi
Report counts are user-submitted; other figures name their official source. How our data works
Comments from San Francisco
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