New York City is about to become the center of global climate action once again. From September 20 to 27, 2026, world leaders, business executives, scientists, and community advocates will descend on the city for one of the most important environmental gatherings on the planet. Whether you are a longtime sustainability professional or simply curious about what the future holds, this is a week you will want to know about.
What Is Climate Week NYC?
Climate Week NYC is the world’s largest annual climate event. It brings together more than 100,000 people across over 1,000 events held throughout New York City. The event is organized by the Climate Group, a global nonprofit dedicated to driving climate action at scale.
The event runs alongside the United Nations General Assembly each year. This timing is deliberate. It places climate conversations at the heart of global political dialogue. Therefore, decisions made during this week often ripple far beyond New York.
Additionally, the event functions as a city-wide platform rather than a single conference. Events are held in venues all across Manhattan and beyond, making it accessible to a wide range of participants.
Why 2026 Matters More Than Ever
This year carries particular weight. Global emissions remain off track, and the impacts of extreme weather are intensifying worldwide. However, 2026 also represents a critical window for turning ambition into real-world action. The world is preparing for COP31 in Antalya, Türkiye, where nations will once again raise their climate commitments.
In this context, Climate Week NYC 2026 serves as a vital warm-up stage. Leaders will arrive in New York ready to align strategies, compare progress, and push for bolder pledges. The conversations that happen here are likely to shape what gets agreed on at COP31 later in the year.
Furthermore, this year’s economic climate adds a layer of complexity. Many governments and businesses are navigating financial uncertainty alongside climate pressure. Collaboration, therefore, has never been more necessary.
Top Events to Watch in 2026
Sustainability LIVE: The Leadership Summit
One of the flagship events of the week takes place on September 22, 2026, at the Javits Center in New York City. Sustainability LIVE at Climate Week NYC is an invite-only conference designed for C-suite and VP-level executives who are driving global climate strategy.
The summit brings together over 500 senior attendees. It features more than 50 expert speakers and four interactive executive workshops. The program covers how to embed sustainability into operations, supply chains, and investment decisions. Attendees leave with practical strategies for meeting ESG goals and cutting emissions while delivering long-term business value.
The Hub Live
The Hub Live is a signature gathering within the week that brings together more than 1,000 influential leaders. Sessions address a wide range of climate themes, from energy transition to biodiversity. It is one of the more open and dynamic parts of the week, designed to spark new conversations and foster unexpected partnerships.
MSCI Climate Finance Forum
MSCI will host an exclusive, invitation-only forum during the week for leaders across the financial sector. This includes investors, banks, and insurers. The agenda explores how physical climate risk, AI infrastructure, and energy disruption are reshaping global markets. Participants will examine how financial institutions are using data and intelligence to find competitive advantage during the shift to a low-carbon economy.
Food Systems and Climate Dialogue
The Global Alliance for the Future of Food will participate in multiple events throughout the week. Their focus is on a critical but often underappreciated issue: food systems drive at least 15 percent of global fossil fuel emissions. These dialogues will explore how to phase out fossil fuels in food production and build more sustainable agricultural systems. Executive Director Anna Lappé will represent the Alliance across several discussions and convenings.
Innovations for a Changing Climate
This event explores how cities and infrastructure can adapt to worsening climate impacts. Sessions include discussions on green and grey infrastructure, AI-driven weather prediction models, smart drainage sensors, and permeable surface technologies. Speakers will address how to build urban environments that can handle extreme heat, heavy rainfall, and other growing weather threats.
Key Speakers to Know
Voices From Government and Civil Society
Climate Week NYC has a long tradition of drawing top-level political voices. Past speakers have included Ursula von der Leyen, Governor Gavin Newsom, UN Secretary-General representatives, and H.E. Gaston Browne. Each year, new voices from government and civil society take the stage to highlight regional perspectives on the climate crisis.
This year, speakers include former Colorado Governor Bill Ritter Jr. and Anacláudia Rossbach, the executive director of UN-Habitat. Their presence reflects the event’s commitment to linking urban planning with climate resilience.
Business and Finance Leaders
The business community plays a major role in the week’s programming. Senior executives from companies across energy, finance, agriculture, and technology will participate in panels and roundtables. These leaders are not just observers. They are expected to make commitments, announce initiatives, and forge new partnerships.
Scientists and Innovators
Beyond policy and finance, the week also features researchers and technology innovators. Their work is essential for turning climate ambition into measurable outcomes. Expect presentations on AI-powered climate modeling, clean energy tracking systems, and nature-based solutions.
Green Innovations Taking Center Stage
Artificial Intelligence and Climate Modeling
AI is rapidly becoming one of the most powerful tools in the climate toolkit. At this year’s events, companies like NVIDIA are expected to present their work on AI-powered Earth modeling systems. These tools allow scientists to simulate climate patterns with greater accuracy and speed than ever before. They help cities plan for floods, droughts, and extreme heat with much more precision.
Clean Energy Tracking
Clean energy tracking is an emerging field that is gaining attention among policymakers and investors alike. Organizations like EnergyTag are developing systems that verify and record when and where clean energy is generated and consumed. This kind of transparency helps businesses and governments make credible claims about their renewable energy use. It is a practical innovation with big implications for how we measure progress toward net zero.
Nature-Based Solutions
Alongside technology, nature-based solutions are drawing growing interest. These approaches use ecosystems such as forests, wetlands, and regenerative farmland to absorb carbon, reduce flood risk, and support biodiversity. Several events during the week will spotlight how these methods can be scaled and financed effectively.
Wave Energy and Marine Renewables
Among the more exciting innovations on display this year are marine energy technologies. Danish company Exowave, for example, develops wave energy systems that generate electricity and support seawater desalination. These solutions are particularly valuable for island nations and coastal communities facing both energy insecurity and freshwater scarcity.
Smart Urban Infrastructure
Cities are on the front lines of climate change. This week will highlight a range of smart infrastructure solutions, from AI-enabled stormwater management to green building standards. The Greenbuild conference, also set for New York this year, will run alongside the week’s broader agenda, reinforcing the city’s role as a testing ground for sustainable urban design.
Who Attends and Why It Matters
Climate Week NYC draws participants from across sectors and regions. You will find heads of state, philanthropic leaders, startup founders, community organizers, and journalists all sharing the same city for seven days. This diversity of voices is one of the event’s greatest strengths.
However, the event is not just about high-level dialogue. Many of the most impactful outcomes come from smaller roundtables and one-on-one conversations that happen in the margins. Partnerships are formed, projects are funded, and ideas are tested against the reality of people doing the hard work on the ground.
Additionally, the event is increasingly accessible to those outside New York City. Many sessions are livestreamed or made available through the Climate Week NYC website, allowing a global audience to participate in real time.
How to Make the Most of the Week
If you are attending in person, planning ahead is essential. The sheer scale of events can be overwhelming. Start by identifying the two or three themes most relevant to your work, then build your schedule around those. The official Climate Week NYC website publishes a full event directory that is searchable by topic, date, and location.
If you are joining remotely, follow the official social media channels for live updates, speaker clips, and key announcements. Many organizations also publish post-event reports and recordings in the weeks that follow.
Conclusion
Climate Week NYC 2026 is shaping up to be a defining moment in the global climate calendar. Running from September 20 to 27, the event will bring together more than 100,000 people across 1,000+ events in New York City, covering everything from clean energy finance to food systems transformation. Key gatherings like the Sustainability LIVE Leadership Summit, The Hub Live, and the MSCI Climate Finance Forum will anchor the week with high-level dialogue and executive decision-making. Speakers from government, business, and civil society will set the tone for what comes next, especially as the world looks ahead to COP31 in Türkiye. Meanwhile, green innovations in AI modeling, clean energy tracking, nature-based solutions, and smart infrastructure are giving real shape to the low-carbon future being discussed. Whether you attend in person or follow from afar, this is a week that matters for anyone who cares about the direction of our planet.
Frequently Asked Questions
When and where is Climate Week NYC 2026?
Climate Week NYC 2026 takes place from September 20 to 27, 2026, across multiple venues in New York City. Events are held throughout the city, with major anchor events at locations like the Javits Center.
Is Climate Week NYC open to the public?
Many events during the week are open to the public or available to registered attendees. However, some flagship events such as the Sustainability LIVE Leadership Summit are invite-only and designed for senior executives. Check the official website at climateweeknyc.org for the full list of open and ticketed events.
How is Climate Week NYC connected to the United Nations?
The event is held each year alongside the UN General Assembly in New York. This timing allows climate conversations to intersect directly with global political negotiations, giving the week extra influence over international policy discussions.
What topics will be covered during the week?
Topics include climate finance, energy transition, industrial decarbonization, nature and biodiversity, food systems, urban infrastructure, adaptation, and just transition. The full breadth of the climate agenda is represented across more than 1,000 events.
How can I follow Climate Week NYC if I cannot attend in person?
You can follow the week through the official Climate Week NYC website and social media channels. Many events are livestreamed, and partner organizations publish recaps, recordings, and reports after the week concludes.
Find this address on Google Maps:
