San Diego, California Internet Outage Today
Live San Diego internet outage reports and how households here get online.
Weather data by Open-Meteo.com
No internet outage reports in San Diego, California in the last 24 hours
The most recent internet outage report from San Diego came in 1 day ago. Over the past 90 days, San Diego residents filed 2 internet outage reports here on 2 separate days; the busiest was October 9, with 1.
Internet access in San Diego
Wired service is unusually common in San Diego: 84.1% of households have cable, fiber or DSL, against 75.6% nationally.
7 home internet providers reach at least 5% of the city's 621,901 homes. Satellite service is excluded. Source: FCC National Broadband Map, December 2025 data.
- Broadband subscription: 95.2% of 530,412 households (California 93.5%, US 91%). Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Fiber to the home: available at 40.2% of 621,901 homes (US 55.9%). Gigabit plans: 68.2%. Cable: 89.7%.
- Home internet providers filing coverage here: AT&T (85% of homes), Cox (49% of homes), Spectrum (46% of homes), San Diego Broadband (19% of homes), California Internet (9% of homes). 5G home or mobile coverage: 91.6% of the city area. Source: FCC National Broadband Map, Dec 2025 data
- Rank: 5th of 20 California cities we track (Fremont highest at 96.8%, Fresno lowest at 88.7%).
- Cable, fiber or DSL: 84.1%. Cellular data only: 9.1% (US 11.5%). Satellite: 5.1%. Wired lines are more common here than nationally.
- No internet subscription: 4.7%. No computer or smartphone: 2.3%. Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Grid reliability, 2024: San Diego Gas & Electric (SDG&E) customers averaged 157 minutes without power. Source: EIA Form 861, 2024 reliability data
- San Diego County storm record since 2015: 500 reports; power outages named in 12 episodes. Source: NOAA Storm Events Database
Source: Census ACS 2020–2024.
Source: FCC National Broadband Map, December 2025 data.
San Diego 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 Diego, CA | AT&T (85%) | 40.2% | 68.2% | 4.7% |
| Irvine, CA | Cox (96%) | 54% | 89.8% | 4.1% |
| Santa Ana, CA | Spectrum (88%) | 38% | 62% | 7.8% |
| Moreno Valley, CA | Spectrum (96%) | 61.4% | 74.9% | 5.4% |
| Riverside, CA | Spectrum (91%) | 31.8% | 48.1% | 5.6% |
Source: FCC National Broadband Map, December 2025 data; Census ACS 2020–2024.
Checked September 2026.
Internet providers in San Diego
Share of San Diego homes each provider reported it can serve, in FCC filings for December 2025: AT&T (85%), T-Mobile Home Internet (71%), Verizon (58%), Cox (49%), and Spectrum (46%). Check your own address on the FCC National Broadband Map. If the lights are out too, see San Diego power outages.
Router checks: internet outage guide. Nationwide: US internet outages.
Who to check first in San Diego
The providers with the widest reported coverage in San Diego. Start with the one on your bill.
AT&T in San Diego
Reach: reports service to 85% of San Diego 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
Cox in San Diego
Reach: reports service to 49% of San Diego homes. Network: Cable (with fiber in some areas), run by Cox Communications.
Where to check: Cox shows outages for your address after you sign in to the Cox app or cox.com, rather than on a public map.
Support: 800-234-3993
Spectrum in San Diego
Reach: reports service to 46% of San Diego homes. Network: Cable, run by Charter Communications.
Where to check: Sign in to the My Spectrum app or spectrum.net; outages at your address show on the account page.
Backup internet options in San Diego
AT&T is the only wired provider reporting service to more than half of San Diego homes (85%); the next largest, Cox, reaches 49%. When its network fails, most households here have no second wired line to switch to, so a phone hotspot or a home 5G plan is the practical backup.
Home 5G and fixed-wireless plans from T-Mobile Home Internet (71%) and Verizon (58%) report coverage of San Diego 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 99.5% for 4G LTE and 91.6% for 5G.
About 9.1% of San Diego households, roughly 48,300 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 Diego
San Diego Gas & Electric (SDG&E) customers averaged 157 minutes without power in 2024, across 0.61 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 Diego power outages when both go out together.
San Diego County logged 500 storm reports since 2015, most often flood, heavy rain, and flash flood. Reports peak in January. Power outages were named in 12 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 40.2% of San Diego homes, cable 89.7% and copper lines 63.8%. 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 Diego internet outage questions
Does a cell network outage take down home internet in San Diego?
For the 9.1% of San Diego households that rely only on a mobile data plan, yes. The 84.1% with cable, fiber or DSL are not affected.
What can I use for internet in San Diego when my provider is down?
A phone hotspot: 4G LTE covers 99.5% of San Diego by area and 5G 91.6%. Home 5G plans: T-Mobile Home Internet (71%) and Verizon (58%).
Can a power outage take internet down in San Diego?
Yes, a long power cut can. San Diego Gas & Electric (SDG&E) customers averaged 157 minutes without power in 2024. NOAA records name power outages in 12 storm episodes in San Diego County since 2015.
Is fiber or gigabit internet available in San Diego?
Fiber is reported at 40.2% of San Diego homes (US 55.9%, California 40.6%), and plans of 1 Gbps or faster at 68.2% (US 69.2%).
How many San Diego households have no home internet?
About 24,900 of 530,412 households, or 4.7%, have no internet subscription of any kind, and another 9.1% rely only on a cell plan (Census ACS 2020–2024).
Which internet provider covers the most homes in San Diego?
AT&T, at 85% of homes in its FCC filing. Fiber reaches 40.2% of San Diego homes and gigabit plans 68.2%.
ISP outage status for San Diego
Recent internet reports in San Diego
- Internet reports in San Diego, last 24h
- 0
- Most recent internet report here
- 1 day ago
- Internet reports across California, last 24h
- 0
- City population
- 1,423,851
Other outage types in San Diego
Internet Outages in cities near San Diego
- Irvine, CA 76 mi
- Santa Ana, CA 82 mi
- Moreno Valley, CA 85 mi
- Riverside, CA 87 mi
- Anaheim, CA 89 mi
- Long Beach, CA 94 mi
Report counts are user-submitted; other figures name their official source. How our data works
Comments from San Diego
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