Los Alamos ScienceFest moves to September, expands regional partnerships
ScienceFest is shifting to September and testing a regional model, raising the question of how much hometown identity Los Alamos keeps as the festival grows.
Los Alamos ScienceFest is moving into September and widening its footprint, a change organizers say is meant to strengthen partnerships while setting up a larger regional science festival model. For Los Alamos, the move is about more than a new date on the calendar: it is a test of whether the festival can grow without losing the downtown, hometown character that has long tied it to the county’s identity.
Los Alamos MainStreet and Creative District said the 2026 festival will run Sept. 18-26, with Discovery Day set for Sept. 26 from 10 a.m. to 2 p.m. downtown. A separate Discovery After Dark event is planned for the same evening from 5 to 8 p.m., restricted to adults 18 and older. Organizers said the September timing is intended to line up better with New Mexico’s fall tourism season and create more room for collaboration with local schools, universities, businesses, artists and science professionals.
The shift also signals a broader ambition. MainStreet and Creative District said they are laying the groundwork for a statewide science festival by piloting a regional model this year. That could bring more reach and more partners into the mix, but it also puts pressure on organizers to show how the festival will remain rooted in Los Alamos rather than becoming just another regional event passing through downtown.
ScienceFest’s own materials describe the event as a celebration of the history and science of Los Alamos through programming for all ages. The festival is now in its 18th year, and its website says thousands typically take part each year in ScienceFest week and Discovery Day. The Discovery Day page says the event is organized by Los Alamos MainStreet with more than 80 partners, collaborators and sponsors, a sign of how wide the local network already is.
That network has been especially visible in Discovery After Dark. In 2025, the 3rd annual “STEAM for Adults” event spread across multiple downtown locations and drew partners including Bathtub Row Brewing Coop, the Los Alamos Teen Center, Los Alamos STEAMLab, Samizdat Bookstore & Teahouse, Boese Bros, Mathamuseum, the Bradbury Science Museum and Fuller Lodge Art Center. The format gave adults their own evening of math games, engineering activities, science experiments, beer and trivia, while keeping the event embedded in downtown businesses and institutions.
Los Alamos MainStreet and Creative District says it is the only county-wide, state-accredited MainStreet program in New Mexico, recognized by Main Street America and serving both Los Alamos and White Rock. That economic-development role helps explain why ScienceFest is being treated as more than a festival. It is also a downtown-activation effort, a tourism draw and a way to keep Los Alamos visible as a place where science, art and civic life still overlap.
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