SF Climate Week: massive yearly event taking place in April with a ton of events, organizations, and resources for getting involved in climate work
Bay Area Climate Tech Cities: weekly newsletter of climate events around the Bay Area
LUMA Climate Calendar SF events
Climate Draft SF events
Clean Tech Open: meetup group for climate tech enthusiasts
Coffee & Climate - monthly informal networking event
Climate Action Club - community for youth changemakers interested in climate
Garden for the Environment - monthly workshops for gardening happening at community gardens around San Francisco
Slack Channels with SF specific channels

Bay Area Community Resources: nonprofit with programs and fellowships for people wanting to work in climate
9Zero Climate Innovation Hub - coworking & events space for climate action, view their calendar for upcoming events
Climatebase: climate accelerator program with a large community in SF
Climate Reality Project: focused convenings on climate action and climate justice in the Bay Area
Yes SF: place-based innovation challenge and accelerator for local climate solutions
Y Combinator: tech startup incubator program
TechStars: tech startup incubator and accelerator program
List of climate tech organizations in San Francisco
ClimateSF: documenting partnerships and collaborations at the city level to mitigate climate change
Planting Justice: growing the food justice movement

San Francisco Climate Resource Guide

London Climate Resource Guide