# Quantum Brewing — San Diego, California

> Quantum Brewing in San Diego, California, United States scores 2.89 out of 5 — Limited, #830 in California. 89 beers tracked, mostly IPA.

*Canonical page: <https://finding.beer/brewery/quantum-brewing-2942/> · data updated 2026-08-13*

Breadcrumb: Breweries → United States → California → Quantum Brewing

Quantum Brewing is a brewery in San Diego, California, United States. We grade it Limited, with a score of 2.89 out of 5 on the beer it brews — #830 in California. Of the 89 beers we track, 33% are IPA and 14% Pale Ale.

## Rating

- Score: 2.89 out of 5
- Grade: Limited 😕 — Most craft beer drinkers pass these by.
- Ranked: #830 in California · #8,442 in United States · #22,521 worldwide
- Popularity: Lightly rated
- Beers tracked: 89

## About

Quantum Brewing produce's not great quality beer and are regularly brewing different ones. They are most well known for "Singularity Stout", which is an Oatmeal Stout and "Chain Reaction Session IPA", which is a Session IPA. Their primary focus is brewing IPAs and Pale Ales.

## What they brew

- IPA — 33% of the beers we track
- Pale Ale — 14% of the beers we track
- Wheat Beer — 13% of the beers we track
- Brown Ale — 13% of the beers we track
- Stout / Porter — 12% of the beers we track
- Amber Ale — 8% of the beers we track
- Other — 7% of the beers we track

## Find them

- Address: 5375 Kearny Villa Road, San Diego, California, United States
- Coordinates: 32.8306228, -117.1392426
- Website: http://quantumbrewingsd.com/

## Breweries nearby

- [Societe Brewing Company](https://finding.beer/brewery/societe-brewing-company-4655.md) — 4.17, Great — San Diego, California — 0.5 mi away
- [Hopnonymous Brewing Company](https://finding.beer/brewery/hopnonymous-brewing-company-24094.md) — 4.17, Great — San Diego, California — 0.9 mi away
- [Kilowatt Brewing](https://finding.beer/brewery/kilowatt-brewing-1850.md) — 3.75, Fine — San Diego, California — 1 mi away
- [Ketch Brewing](https://finding.beer/brewery/ketch-brewing-1178.md) — 3.93, Fine — San Diego, California — 1.5 mi away
- [San Diego Brewing Company](https://finding.beer/brewery/san-diego-brewing-company-3643.md) — 3.51, Poor — San Diego, California — 3.5 mi away
- [Kings & Convicts Brewing Co.](https://finding.beer/brewery/kings-convicts-brewing-co-28474.md) — 3.83, Fine — San Diego, California — 3.7 mi away
- [Duck Foot Brewing Company](https://finding.beer/brewery/duck-foot-brewing-company-50.md) — 3.76, Fine — San Diego, California — 3.9 mi away
- [Embolden Beer Company](https://finding.beer/brewery/embolden-beer-company-23548.md) — 3.88, Fine — San Diego, California — 3.9 mi away

## Rankings this brewery appears in

- [Best breweries in San Diego, California](https://finding.beer/breweries/united-states/california/san-diego.md)
- [Best breweries in California](https://finding.beer/breweries/united-states/california.md)
- [Best breweries in United States](https://finding.beer/breweries/united-states.md)

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Finding Beer scores breweries on the beer they brew rather than on the venue. Method: <https://finding.beer/how-we-rank.md>. Rankings by place: <https://finding.beer/breweries.md>. The iPhone app adds a live map of what is around you: https://apps.apple.com/us/app/finding-beer/id1082135126