Nocturnal Valley is a music, arts and community festival presented by Downright Entertainment at Astral Valley Art Park in French Village, Missouri. The 2026 edition ran from Thursday, September 24 to Saturday, September 26, and it was held in celebration of Downright Entertainment's 10-year anniversary. The St. Louis promoter describes it as a three-day immersive experience of curated stages, interactive art installations and community under the starlit Missouri sky. Doors opened a day early for the Wednesday, September 23 Early Arrival Pre-Party (for holders of the Wednesday add-on), the Thursday Launch Party was included with general admission, and music programming ended at 8 AM on Sunday, September 27.
The official FAQ named three stages: the Forest Stage, open from Wednesday; the Nocturnal Stage, which joined on Thursday; and the Astral (Main) Stage, open on Friday and Saturday. The official ticket page listed 57 artists, among them STS9, The Disco Biscuits, Emancipator, G Jones, Daily Bread, Skream, TroyBoi, Caspa, PEEKABOO, LYNY, KOAN Sound and Mefjus; the festival called its final bill a mix of its favorite producers, bands and regional talent. After the weekend, the festival's own Instagram recap posts celebrated two STS9 sets and making it to sunrise.
Astral Valley Art Park had two free shower houses, one at the Forest Stage and one in the Stargazer Campground, plus several swimming holes. Nocturnal Valley was an 18+ event. Phone service on site was extremely limited and there was no public WiFi in 2026, and the festival invited attendees to disconnect and take in the music, art and nature. Medical and harm-reduction services, hydration stations and a General Store selling ice were on site, and Zero Waste Event Productions ran recycling on the grounds.