Important Safety Notice
The National Park Service follows CDC guidance to reduce the spread of COVID-19. Check our website and social media channels for updates and changes in park operations. Thank you for helping to keep yourself and others safe and healthy.
Consistent with CDC guidance, visitors to Alcatraz Island, regardless of vaccination status or community transmission levels, are required to wear a mask in crowded outdoor spaces and indoors in all park buildings. Masks are required for everyone on all forms of public transportation including the Alcatraz City Cruises ferry vessels.
Practice physical distancing by maintaining at least 6 feet (2 m) of distance between you and others.
Wash your hands with soap and water for at least 20 seconds or use hand sanitizer. Cover your mouth and nose when you cough or sneeze. If you feel sick, do not visit the park.
The weather on Alcatraz is unpredictable and liable to change unexpectedly, so be prepared by bringing along a light jacket or sweater no matter how nice the day starts out. Cold, foggy mornings may give way to sunny afternoons, which in turn can shift quickly back to more fog and blustery winds.
Air Quality & Smoke
Air quality can vary quite a bit in an urban environment like the San Francisco Bay Area. Inversions can trap smog from motor vehicles and industry, especially during winter months. During summer and fall, ozone and smoke from wildfires can degrade the air quality, reducing visibility and posing a health concern, especially for sensitive people.
Last updated: December 16, 2021