San Francisco Gears Up for Massive Climate Week

Annual event draws 80,000 attendees for sustainability events across the city.

Apr. 18, 2026 at 8:21pm by

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A bold, abstract painting in earthy greens, blues, and ochres, featuring sweeping geometric arcs, concentric circles, and precise botanical spirals, conceptually representing the complex systems and forces of the natural world.San Francisco's annual Climate Week festival brings together innovators, activists, and community members to drive progress on urgent environmental challenges.San Francisco Today

San Francisco is preparing to host one of the world's largest climate gatherings next week as the city's annual Climate Week festival returns for its fourth year. The multi-day event is expected to draw around 80,000 attendees to participate in nature walks, industry panels, sustainable fashion shows, and other eco-focused programming.

Why it matters

As a global hub for climate innovation and environmental activism, San Francisco's Climate Week has become a major platform for raising awareness, showcasing sustainability solutions, and bringing together leaders from business, government, and the nonprofit sector to address the urgent challenges of climate change.

The details

This year's Climate Week features a diverse lineup of events, including nature walks through the Presidio, panels on clean energy technology, sustainable fashion shows highlighting eco-friendly brands, and interactive exhibits on urban gardening and wildlife conservation. The festival is organized by a team led by CEO Evan Hynes and Co-founder Justin Hardin.

  • Climate Week is scheduled to take place April 22-28, 2026.
  • The festival coincides with Earth Day, which falls on April 22 this year.

The players

Evan Hynes

CEO of San Francisco Climate Week.

Justin Hardin

Co-founder of San Francisco Climate Week.

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What they’re saying

“We're thrilled to bring Climate Week back to San Francisco and showcase the city's leadership on sustainability and climate action.”

— Evan Hynes, CEO, San Francisco Climate Week

“This year's program is our most ambitious yet, with something for everyone who cares about the future of our planet.”

— Justin Hardin, Co-founder, San Francisco Climate Week

What’s next

Organizers expect Climate Week to continue growing in the coming years as San Francisco solidifies its reputation as a global leader in sustainability and climate innovation.

The takeaway

San Francisco's annual Climate Week has become a premier event for showcasing the city's commitment to environmental stewardship and bringing together diverse stakeholders to drive progress on critical climate challenges.