Throughout April 2026, California will host a range of Earth Day events highlighting the state’s diverse landscapes and commitment to environmental action. Activities include community cleanups, educational festivals, and opportunities for residents and visitors to engage with sustainability efforts.
On April 18, Napa Valley’s Oxbow Commons will welcome cyclists with a free bike valet at Earth Day Napa. The event offers crafts, games, food, beer, live music, and an earlier community cleanup in Napa and Yountville.
The Los Angeles Zoo will hold its “Wild for the Planet” conservation-themed celebration from April 17–19. Visitors can participate in special animal feedings, try local honey, and attend no-waste activities during this five-week program.
National Park Week runs from April 18–26 across California’s national parks. On April 22, all parks will be open to visitors; however, unlike past years, entrance fees will not be waived. Special activities are planned at each park throughout the week.
San Francisco’s Yerba Buena Gardens will host a free Earth Day Festival on April 21 featuring live performances, tree planting, chalk art, carousel rides, and more. Online reservations are requested for attendees.
In North Lake Tahoe on April 26, the Tahoe Truckee Earth Day Festival at Palisades Tahoe resort includes live music, a student “trashion” show focused on upcycled fashion, climate exhibits, hands-on booths, and education about Washoe Tribe culture. Sustainable travel options like free shuttles are encouraged.
Santa Rosa’s Courthouse Square is set for a zero-waste Earth Day Festival on April 26 with kids’ crafts, multicultural entertainment such as taiko drummers and Irish dancers, workshops on composting and honeybees, and local food vendors.
San Luis Obispo will hold SLO Earth Fest on April 18 in Meadow Park. The event features a kids’ zone, green car show including electric vehicles (EVs), local art displays, food trucks, vendor booths from environmental organizations and artisans selling sustainable goods. Registration is required but entry is free.
Long Beach’s Aquarium of the Pacific presents its Teen Climate Fest on April 25 with educational displays and sustainable art organized by its teen climate council. General admission is required for access.
Families can join Newport Beach’s Earth Day celebration at Upper Newport Bay’s Peter & Mary Muth Interpretive Center on April 18. The event includes food trucks, arts and crafts activities for children, live music and an educational scavenger hunt—all offered at no cost.
San Diego County will see the return of its Creek to Bay Cleanup on April 25. Last year nearly 60,000 pounds of litter were removed from inland and coastal sites through volunteer efforts coordinated across dozens of locations throughout the county.
Santa Barbara hosts one of the largest public Earth Day festivals on the West Coast from April 25–26 with over 200 exhibitors. Attendees can explore clean vehicle technology including electric cars and e-bikes as well as solar energy initiatives while enjoying plant-based foods and family entertainment over two days.
California State Parks Foundation offers Climate Action Workdays throughout the month where volunteers can participate in trash removal or habitat restoration projects in locations ranging from Old Town San Diego to China Camp State Park near San Rafael.
Truckee-Tahoe region continues its focus on sustainability-minded programming all month long through various initiatives such as sustainable gift cards that support eco-friendly businesses locally.
