Toxic Winter 2027 is a two-night bass music festival on Friday, February 5 and Saturday, February 6, 2027 at The Midway, 900 Marin St, San Francisco, CA 94124. The official lineup poster credits Insomniac and Vital as presenters; Insomniac runs it under its Bassrush bass brand and Vital Events is the San Francisco and Sacramento promoter it partners with on Bay Area shows. The Insomniac event page lists 8:00 PM to 2:00 AM on both nights, and both the event page and the poster mark the show 21+. Toxic is a Bay Area bass series with a summer and a winter edition, and the 2027 winter edition moves to The Midway after the 2026 edition at DNA Lounge.
The lineup was announced around September 24, 2026 and lists 22 acts in alphabetical order, with no day split on the official poster or the official event page: Alyssa Jolee, Automhate presents: VYLE, BEAUZ, Codd Dubz, DAZZLE$, Dr Donk, Dual Damage, Finnuh, FuntCase, GRAVEDGR, Hostage Situation, INFEKT, Mish, Must Die!, OG Nixin, Riot Ten, roi*, Sanzu B2B 7L, Vieze Asbak, Warlord, Xotix and Yosuf. The bill mixes dubstep and riddim (FuntCase, Must Die!, Riot Ten, Codd Dubz) with hard dance and hardcore names such as Dual Damage, Dr Donk and Vieze Asbak, which is a wider spread than the all-riddim 2026 edition. Day assignments, stage names and set times had not been posted as of October 3, 2026.
The Midway is a converted warehouse venue in the Dogpatch and Bayview area of San Francisco with more than 40,000 square feet of indoor and outdoor space. Its corporate event listings give a 12,000 square foot main room called Ride that holds 1,500 standing, plus a Gallery room, a Carousel room and an outdoor Patio, with an overall maximum of about 2,500. That makes Toxic Winter a club-scale festival compared with arena bass events: you are close to the booth in every room, the show is indoors and out under one roof in February, and the Toxic summer editions at The Midway have used three stages. The number of stages for the 2027 winter edition had not been announced as of October 3, 2026.

