Yes, the Alamodome is covered — it’s a fully enclosed, air-conditioned stadium, not an open-air bowl with a retractable panel that slides back for nice weather. San Antonio’s domed stadium has been sealed off from the elements since it opened on May 15, 1993, which is exactly why it still works as a year-round host for everything from UTSA football to the Final Four.
That full enclosure is also what separates the Alamodome from most college and NFL venues: there’s no rain delay, no sun glare, and no outdoor-temperature swing to plan around. Here’s exactly how the roof works, how the building stays climate-controlled, and what else to know if you’re heading there for a game, the Alamo Bowl, or a concert.
- San Antonio Spurs played here 1993–2002. See every Spurs arena →
Quick Answer
Yes — the Alamodome is covered and fully enclosed, with a fixed (non-retractable) roof and year-round air conditioning. It opened May 15, 1993, seats about 64,000 for football (up to roughly 72,000), around 20,662 for basketball (up to 35,888), and anywhere from about 30,000 to 50,000+ for concerts depending on the stage setup.
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Is the Alamodome Covered? Roof & Structure Explained
The Alamodome is completely covered — it’s an enclosed, climate-controlled building rather than an open-air stadium, and unlike some newer NFL domes such as AT&T Stadium, its roof doesn’t retract or open at all. The entire bowl, field, and concourses sit under a permanent roof every day of the year.
Despite the name, it isn’t a true dome shaped like a single curved shell. The gently sloped roof is held up by a cable-suspension system anchored to four 300-foot towers at the corners of the building, a design choice that let engineers span the roughly 64,000-seat bowl without interior support columns blocking sightlines. That fixed, cable-hung roof has stayed in place, unmodified in basic form, since the building opened in 1993.
Practically, that means weather is a non-issue for anything held inside: no rain delays for UTSA football or the Alamo Bowl, no wind affecting field goals, and no heat advisories cutting a concert short. It’s one of the reasons the Alamodome keeps landing NCAA Final Fours and other marquee events that need a guaranteed, controlled environment regardless of the Texas forecast.
Is the Alamodome Air-Conditioned?
Yes — full air conditioning was part of the original pitch to NFL owners in the early 1990s: a controlled-climate alternative to San Antonio’s summer heat and humidity, something open-air Texas stadiums couldn’t offer. The system conditions the entire 1.2-million-square-foot building, not just the seating bowl, so temperatures stay comfortable for games, concerts, and conventions alike.
Combined with the fixed roof, the air conditioning is what lets the Alamodome double as one of the city’s largest convention spaces — it has nearly 200,000 square feet of meeting and exhibit space beyond the field and seating bowl, all under the same enclosed, climate-controlled envelope.
From NFL Bid to College Football Home
San Antonio built the Alamodome hoping to attract an NFL expansion team or relocation in the early 1990s, but no franchise ever moved in. Designed by HOK Sport and Marmon Mok, the dome instead became home to the Spurs from 1993 to 2002 before they decamped to a purpose-built arena, settling into a role hosting one-off pro games, including three New Orleans Saints home games in 2005 after Hurricane Katrina damaged the Superdome.
Since 2011, the Alamodome has anchored UTSA’s football program, giving the Roadrunners one of the largest stadiums in college football relative to typical campus attendance. The city-owned venue sits downtown, several miles from UTSA’s main campus, and also hosts the Valero Alamo Bowl every December, drawing a mix of conference fans to its expansive, enclosed concourses.
How Big Is the Alamodome? Capacity by Event Type
At its base, the Alamodome seats about 64,000 for football — the configuration used by UTSA and the Alamo Bowl — and that number can grow to roughly 72,000 when the venue adds temporary seating for high-demand games. For basketball and other arena-style events, the lower bowl alone holds about 20,662 seats, which can expand to 35,888, or further still for marquee events like the NCAA Men’s Final Four, which has used a stadium-style floor setup inside the dome rather than a standard arena bowl.
Concert capacity swings the widest of all, depending on where the stage sits. An arena-style show with the stage at one end of the building typically holds around 30,000 to 33,000 fans in a more intimate bowl configuration. Open up the full stadium seating for a center-stage, in-the-round show, and the Alamodome can accommodate roughly 50,000 up toward 77,000, based on figures in the venue’s own event-planning guide — though most touring concerts use a smaller end-stage setup well under that ceiling. The building’s all-time attendance record came from a non-ticketed event: an estimated 76,483 fans packed in for the Spurs’ 2014 NBA championship celebration.
A Stage for Major Events
Beyond football, the Alamodome has repeatedly landed on the NCAA’s short list for the Men’s Basketball Final Four, hosting the event in 1998, 2004, 2008, 2018, and 2025. Its reconfigurable seating bowl, combined with the enclosed, climate-controlled interior, has also supported WWE pay-per-views, championship boxing, indoor football, and large-scale conventions and concerts that take advantage of San Antonio’s downtown location.
Bag Policy
The Alamodome enforces a clear-bag policy at every ticketed event. Allowed bags include clear plastic, vinyl, or PVC totes up to 12″ x 6″ x 12″, one-gallon clear freezer bags, and small clutches or wallets up to 5.5″ x 8.5″. Backpacks, purses, briefcases, and any opaque or patterned bag larger than a small clutch are turned away at the gate. Guests with medically necessary items or an accompanying infant can bring larger bags, but they go through extra screening at entry.
Check the official Alamodome clear bag policy page before you go, since exact rules can be adjusted for specific events.
Planning Your Visit: Parking, Tickets & Hours
Parking at the Alamodome’s own lots is generally sold in advance online rather than at the gate, and prices are set per event rather than at a single flat rate — big games and concerts cost more than a weekday convention. For UTSA football and the Alamo Bowl, the dome’s own lots typically open around midday for tailgating and close roughly an hour after the final whistle; tailgating outside of those events generally isn’t permitted. Plenty of paid downtown lots and garages within walking distance fill in the gaps on sold-out game days.
Tickets for most events run through the team, promoter, or Ticketmaster rather than a single box-office price, and box-office hours are set on weekdays separate from event-day hours, which vary by show. Because exact lot maps, prices, and hours shift by event, check the official Alamodome plan-your-visit page for the current rate and hours for your specific date.
Photos
For late-season football, outdoor hockey and October park nights. Shake, pocket, and stay warm for hours.
12 x 10.5 x 6 in. — built to the common stadium clear-bag size. Check your venue's rules.
USB-charged warmers for cold night games — no disposable packets.
Alamodome covered stadium FAQs
Is the Alamodome covered or open-air?
It’s fully covered. The Alamodome is an enclosed, climate-controlled stadium with a fixed roof — it isn’t an open-air bowl, and there’s no retractable panel that opens to the sky.
Does the Alamodome’s roof open or retract?
No. Unlike some newer NFL domes, the Alamodome’s cable-suspended roof is fixed in place. It has stayed closed and enclosed year-round since the building opened in 1993.
Is the Alamodome air-conditioned?
Yes, the entire building is air-conditioned, including the seating bowl, field, and convention space, so temperatures stay controlled regardless of San Antonio’s outside weather.
Why is it called a ‘dome’ if the roof isn’t curved?
The name is a nickname rather than a literal description. The roof is a gently sloped, cable-suspended structure anchored to four 300-foot towers, not a single curved dome shell, but it fully encloses the building the same way a true dome would.
What is the Alamodome’s capacity?
About 64,000 for UTSA football and the Alamo Bowl (expandable to roughly 72,000), around 20,662 for basketball (expandable to 35,888), and 30,000 to 50,000+ for concerts depending on the stage configuration.
Can weather cause delays at Alamodome events?
No. Because the building is fully enclosed with a fixed roof, rain, wind, and heat don’t affect games, concerts, or other events held inside.
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