Running from September 21-28, Climate Week NYC is a global event hosted by The Climate Group that brings together leaders from local government, business, technology, politics, academia, and NGOs to accelerate climate action.
ICLEI will be on the ground throughout the week, bringing a delegation of more than 20 mayors and local leaders — our largest ever for the week — from the United States, Brazil, Sweden, Morocco, Ecuador, Argentina, Australia, and Colombia. With a strong delegation of elected officials and staff, ICLEI will spotlight how cities, counties, and regions are shaping the path toward COP30 in Belém and driving the transition to a faster, fairer, and further climate future.
Local Leaders Delegation
- Katrin Stjernfeldt Jammeh, Mayor of Malmö, Sweden (ICLEI President)
- Marjorie Kauffmann, Secretary of State for Environment and Infrastructure, State of Rio Grande do Sul, Brazil (ICLEI Vice President)
- Nicola Armacost, Mayor of Hastings on Hudson, NY (USAO Board & RexCom)
- Jeni Arndt, Mayor of Fort Collins, Colorado (ICLEI USA Board)
- Ravi Bhalla, Mayor of Hoboken, NJ (USAO Board)
- Justin Bibb, Mayor of Cleveland, OH, and America Is All In Co-Chair
- Nancy Metayer Bowen, Vice Mayor of Coral Springs, Florida (USAO Board)
- Marília Carvalho de Melo, Secretary of State for the Environment and Sustainable Development, Minas Gerais, Brazil
- Alejandro Char, Mayor of Barranquilla, Colombia
- Ivan Euler, Secretary of Sustainability, Resilience, and Animal Welfare and Protection, Salvador, Brazil
- María Victoria Flores, Minister of Environment and Circular Economy, Córdoba, Argentina
- André Granda, Provincial Governor, Pastaza, Ecuador
- Jane Lomax-Smith, Lord Mayor of Adelaide, Australia
- Lauren McLean, Mayor of Boise, ID, and Climate Mayors Vice Chair
- Steve Patterson, Mayor of Athens, OH
- Mohamed Sefiani, Mayor of Chefchaouen, Morocco
- Brigid Shea, Commissioner, Travis County, Texas (USAO Board Chair)
- Christopher Taylor, Mayor of Ann Arbor, Michigan, and Former ICLEI Global Portfolio on Renewable Energy
- Paul Tigan, Councilmember, City of Salem, OR
ICLEI Staff Delegation
- Saharnaz Mirzazad, Executive Director, ICLEI USA
- Alyssa Chenault, Climate Action Manager, ICLEI World Secretariat
- Bianca Cantoni, Institutional and Advocacy Coordinator, ICLEI South America Secretariat
- Anne Marie Cleary Rauker, Senior Communications Officer, ICLEI USA (United States)
- Hannah Corn, Senior Program Officer, Municipal Investment Fund, ICLEI USA (United States)
- Angelica Greco, Senior Resilience Officer, ICLEI USA (United States)
- Jess Grannis, Director of Programs, ICLEI USA (United States)
- Darcie Howard, Program Associate, Development and Grantmaking, ICLEI USA (United States)
- Kristi Kimball, Advisor on Development, ICLEI USA (United States)
- Kale Roberts, Director of Membership & Local Diplomacy, ICLEI USA (United States)
New York Climate Week Agenda
Saturday, September 20
Town Hall COP: Hastings-on-Hudson
A “Local COP” climate event hosted by the Village in partnership with Mayor Nicola Armacost & ICLEI USA
Date: September 20
Host: Village of Hastings-on-Hudson, NY
Sunday, September 21
UNGA 2025: AI for Global Progress – An Innovation Showcase
Date: September 21
Time: 1:00 – 5:30 PM ET
Host: Google
Monday, September 22
Financing for USA Adaptation Investments due to Climate Change
Date: Monday, September 22
Time: 8:30 AM – 1:00 PM ET
Host: FIASI
Official launch of the “Road to COP” report to highlight Sweden’s ambitions ahead of COP30 in Brazil
Date: Monday, September 22
Time: 8:45 AM – 11:00 AM ET
Host: Business Sweden and Sweden’s COP Non-Negotiating Delegation
AI x City Climate Action Hackathon Finale
Date: Monday, September 22
Time: 8:30 AM – 1:00 PM ET
Host: Co-hosted with New York Climate Exchange (Partners: IBM, New York University, UTM, Johns Hopkins)
High-Level Solutions Dialogue on Accelerating Early Warning and Extreme Heat Solutions
Date: Monday, September 22
Time: 9:00 AM – 10:30 AM ET
Host: UNSG Office
Opening Ceremony 2025
The official launch of Climate Week NYC 2025, hosted by The Climate Group.
Date: Monday, September 22
Time: 9:00 AM ET
Host: Climate Group
High-Level Solutions Dialogue on Accelerating Adaptation Implementation and Investment
Date: Monday, September 22
Time: 11:00 AM – 1:00 PM ET
Host: UN EOSG
UNSG NDC Local Solution Dialogue
Date: Monday, September 22
Time: TBC
Host: UN EOSG (via GCoM)
CHAMP Country Contact Group Convening
Date: Monday, September 22
Time: 12:00 PM – 3:00 PM ET
Host: CHAMP Support Unit (GCoM)
Moving from Data to Dialogue to Doing: Leveraging the Science of Communication for Climate Action
Date: Monday, September 22
Time: 12:30 PM – 1:30 PM ET
Host: Yale
Municipal Investment Fund Event: Aligning Capital for Clean Energy Infrastructure
A session on financing local climate solutions through municipal investment.
Date: Monday, September 22
Time: 2:00 – 5:00 PM ET
Host: ICLEI USA and Coalition for Green Capital
Under2 Ministerial
Date: Monday, September 22
Time: 3:00 PM – 5:30 PM ET
Host: Under2
Confluence Philanthropy Reception
Date: Monday, September 22
Time: 8:00 PM – 10:00 PM ET
Host: Confluence Philanthropy
Quebec Reception
Date: Monday, September 22
Time: 7:00 PM – 9:30 PM ET
Host: Quebec + Under2
Tuesday, September 23
G20 Social Side Event at UNGA80
Date: Tuesday, September 23
Time: 8:30 AM – 11:00 AM ET
Host: UNDP + Open Society
Europe-U.S.-Brazil Dialogue on Climate Change
Date: Tuesday, September 23
Time: 9:00 AM – 12:00 PM ET
Host: Prof. Laurence Tubiana (European Climate Foundation) and Dr. Jonathan Pershing
Connecting science with impact: RethinkAction × ClimateView at the Doconomy Stage
Explore the science-based land-use and adaptation solutions from the RethinkAction project
Date: Tuesday, September 23
Time: 11:00 AM – 12:00 PM EDT
Host: ICLEI, ClimateView, CARTIF
To attend, please register here.
The Climate Group Event – U.S. Abundance Agenda
A high-level conversation on accelerating the transition to a clean energy economy.
Date: Tuesday, September 23
Time: 11:00 AM – 5:30 PM ET
Host: The Climate Group (Co-hosted by ICLEI USA)
The Price of Power: Solutions for Energy Affordability
Date: Tuesday, September 23
Time: 12:00 PM – 3:00 PM ET
Host: Powerlines + Climate Mayors
UNFCCC High-Level Champions
Date: Tuesday, September 23
Time: 12:00 PM – 3:00 PM ET
Host: UNFCCC MPGCA – COP30 Presidency
Roundtable: How circular design, green public procurement, and system-wide innovation are embedded into corporate strategies to drive sustainable infrastructure
Date: Tuesday, September 23
Time: 1:30 PM – 4:00 PM ET
Host: Business Sweden and Mattias Frumerie, Climate Ambassador of Sweden
Rethinking Food Waste: Policy, Practice, and Progress
Date: Tuesday, September 23
Time: 2:30 PM – 5:30 PM ET
Host: NRDC
Cocktail Reception for EGA Members
Date: Tuesday, September 23
Time: 3:00 PM – 5:00 PM ET
Host: Environmental Grantmakers Association
Climate Group Reception for American Innovation
Date: Tuesday, September 23
Time: 5:30 PM – 8:00 PM ET
Host: The Climate Group
ICLEI Delegate Dinner
Date: Tuesday, September 23
Time: 7:00 PM – 9:00 PM ET
Host: ICLEI USA
Wednesday, September 24
InnSure Workshop
Date: Wednesday, September 24
Time: 9:00 AM – 4:30 PM ET
Host: InnSure
Who Will Lead? with Al Gore at Climate Week NYC
Date: Wednesday, September 24
Time: 8:00 AM – 9:45 AM ET
Host: Climate Reality
SDSN Global Commission Plenary Meeting – Hybrid
Date: Wednesday, September 24
Time: 8:30 AM – 10:00 AM ET
Host: Commissioner Adam Brenneman and Milbank LLP
Climate Mayors Meeting
Date: Wednesday, September 24
Time: 9:00 AM – 1:00 PM ET
Host: Climate Mayors
Empowering Local Climate Action through Climate Tech Solutions
Exploring innovation at the intersection of technology and climate action.
Date: Wednesday, September 24
Time: 11:00 AM – 1:00 PM ET
Host: ICLEI USA, ClimateView, and EY
To register, please reach out to hassan.haddad@ey.com.
New Paradigm of Regulatory Ingenuity
Date: Wednesday, September 24
Time: 11:00 AM – 12:15 PM (Lunch: 12:15 PM – 1:15 PM) ET
Host: FAS, Climate Group, and Confluence Philanthropy
Z Zurich Foundation’s Urban Resilience Forum: Catalyzing Partnerships for Scalable, Community-Driven Solutions
Date: Wednesday, September 24
Time: 11:30 AM – 1:00 PM ET
Host: Z Zurich Foundation
Federation of American Scientists (FAS) Funder Roundtable on Barriers to Clean Energy Deployment
Date: Wednesday, September 24
Time: 1:00 PM – 2:30 PM ET
Host: Federation of American Scientists
Big Tent of Climate Action: City Networks, Industry, Utilities
Discussion with thought leaders on subnational leadership, followed by a networking happy hour.
Date: Wednesday, September 24
Time: 3:00 PM – 5:00 PM ET
Host: Co-hosted by ICLEI USA, National League of Cities, and National Association of Counties
Scaling Climate Impact: RethinkAction Solutions Meet ClimateView’s Open-Source Transition Framework
Date: Wednesday, 24 September
Time: 3:00 – 4:00 PM ET
Host: ICLEI, ClimateView, CARTIF
For limited in-person attendance, visit here
Online: Join virtually from anywhere – see here
UNSG Climate Summit
Date: Wednesday, September 24
Time: 2:00 PM – 6:00 PM ET
Host: UN Secretary General’s Office
High-Level Convening of City Climate Networks
Date: Wednesday, September 24
Time: 4:30 PM – 6:00 PM ET
Host: Urban Climate Change Research Network (UCCRN) + GCoM
We Don’t Have Time Reception
Date: Wednesday, September 24
Time: 6:00 PM – 9:00 PM ET
Host: We Don’t Have Time
Multilevel Action and CHAMP Working Group Reception
Date: Wednesday, September 24
Time: 6:30 PM – 7:30 PM ET
Host: Under2 Coalition, ICLEI, C40, and GCoM on behalf of LGMA Constituency and CHAMP Working Group
Thursday, September 25
National League of Cities: Nature-based Solutions for Climate Resilience to Wildfires and Extreme Heat
Date: Thursday, September 25
Time: 9:30 AM – 11:30 AM
Host: National League of Cities
World Climate Foundation Biodiversity & Climate Summit
Date: Thursday, September 25
Time: 8:00 AM – 4:00 PM
Host: World Climate Foundation
Climate Mobility Summit. Speaking Session VI: “Cities on the Frontlines: The Ocean Rise and Coastal Resilience Coalition”
Date: Thursday, September 25
Time: 12:00 PM – 1:30 PM
Host: GCCM
Electric Innovation Forum
Date: Thursday, September 25
Time: 12:30 PM – 4:30 PM
Host: WSP
Happy Hour: Resilient Cities Catalyst
Date: Thursday, September 25
Time: 5:00 PM – 7:00 PM
Host: RCC
Smart Cities, Shared Futures: Bridging Asia and the World
Date: Thursday, September 25
Time: TBD
Host: Yokohama Event
Friday, September 26
UN Foundation SDGs Event
Date: Friday, September 26
Time: 9:00 AM – 11:00 AM
Host: UN Foundation
Net Impact and EY’s Climate Week Wine Down
Date: Friday, September 26
Time: 3:00 PM – 6:30 PM
Host: EY
And More at Climate Week NYC 2025
Beyond our official sessions, ICLEI USA staff will be engaging throughout the week at a wide range of Climate Week NYC events, connecting with partners, amplifying local government leadership, and bringing insights back to our members. Follow us on social media for highlights from these additional events.