Urban Heat Island Effect

Children walking on a wooden walkway over green creek bed in Copenhagen, Denmark.

Copenhagen is losing its cool

In a city long designed to maximize light during dark Scandinavian winters, climate change is forcing the Danish capital to rethink its relationship with the sun.

July 9, 2026 - Emilie K. Adin

Two people walking on wide sidewalk shaded by mature trees in Malaga, Spain.

Green blocks are up to 4 degrees cooler than treeless streets

The difference in temperature created by urban trees can translate to as much as 40% less excess heat.

May 7, 2026 - Green Spaces Coalition

A wide-angle overview of a busy street at Downtown Austin, with modern skyscrapers towering in background, on a bright sunny Autumn day.

Austin uses satellite data to find gaps in its tree canopy

Layering tree data, heat risk and demographics information is helping the city implement its Climate Equity Plan.

April 27, 2026 - Smart Cities Dive

Street in Seattle, Washington with large trees shading sidewalk with glass storefront.

Washington Urban Forestry Program Faces 'Existential' Budget Cut

A proposed budget eliminates funding for a key urban forestry program that funds greening efforts across the state.

March 2, 2026 - The Urbanist

Heat map of two different neighborhoods in Houston, Texas.

Study: Houston’s Vacant Lots Worsen Heat Island Effect

Paved lots and abandoned buildings can raise surrounding surface temperatures as much as 20 degrees, according to a new study.

October 8, 2025 - Texas A&M University

Dozens of cars parked in rows in an open-air parking lot.

Study: Parked Cars Significantly Increase Urban Heat Island Effect

Dark-colored cars in particular can raise the surrounding air temperature by as much as 3.8 degrees Celsius.

August 17, 2025 - Carbon Copy

A New Orleans streetscape lined with mature Southern Live Oak trees.

Art in the Shade: Confronting Climate and Equity Through Creativity

Through powerful, multisensory installations, Roots of Cool uses art to illuminate Los Angeles’ climate and shade inequities, inviting visitors to imagine a more just, tree-filled future.

July 21, 2025 - Los Angeles Times

Worker painting metal roof white.

New Atlanta Law Requires ‘Cool Roofs’

Painting roofs with reflective coatings can significantly reduce indoor temperatures and improve energy efficiency, sometimes at a lower cost than traditional roof treatments.

July 15, 2025 - Next City

Man sitting on bench sillhouetted against golden hour trees in tranquil park.

‘Smart Surfaces’ Policy Guide Offers Advice for Building and Maintaining Urban Tree Canopies

Healthy, robust tree canopies can reduce the impacts of extreme heat and improve air quality.

April 30, 2025 - Smart Cities Dive

Brick school building with mid-sized tree on front lawn.

Alabama School Forestry Initiative Brings Trees to Schoolyards

Trees can improve physical and mental health for students and commnity members.

April 25, 2025 - Governing

Yellow roadside sign with extreme heat warning: "Danger - Extreme Conditions! - STOP - Do not hike Jun-Sep - HEAT KILLS"

Record Temperatures Prompt Push for Environmental Justice Bills

Nevada legislators are proposing laws that would mandate heat mitigation measures to protect residents from the impacts of extreme heat.

April 21, 2025 - Nevada Current

"Welcome to fabulous Las Vegas Nevada" sign with mottled shade from palm tree.

Planting Relief: Tackling Las Vegas Heat One Tree at a Time

Nevada Plants, a Las Vegas-based nonprofit, is combating the city’s extreme urban heat by giving away trees to residents in underserved neighborhoods, promoting shade, sustainability, and community health.

April 10, 2025 - KTNV

Large trees on either side of wide suburban street.

How AI Is Revolutionizing Urban Forestry and Climate Resilience

Tree-D Fusion, an AI-driven tool developed by MIT and Purdue researchers, generates 3D models of urban trees to help city planners visualize future green spaces, address climate challenges, and enhance urban livability and sustainability.

January 13, 2025 - Wood Central

Bus stop with agave mosaic in Phoenix, Arizona.

Phoenix Shade Plan Focuses on Bus Stops

The city’s updated Shade Master Plan calls for trees and built structures at bus stops to protect residents from heat.

January 9, 2025 - Smart Cities Dive

Small trees on city sidewlak with glass buildings in background.

Cities Prioritize Urban Reforestation to Combat Heat and Revitalize Communities

Cities like Phoenix, Chicago, and Boise are prioritizing urban reforestation as critical green infrastructure to combat extreme heat, address environmental inequities, and foster community revitalization.

December 20, 2024 - USGBC

Public stairs in Los Angeles, California painted with rainbow and red hearts.

A Framework for Inclusive Tree Planting in Los Angeles

The Los Angeles Urban Forest Equity Collective has developed an equity-centered tree-planting framework and toolkit to address historic underinvestment and mitigate extreme heat in vulnerable neighborhoods.

December 10, 2024 - UCLA Luskin Center for Innovation

Large store in mall with yellow and black STORE CLOSING sign on front.

Shifts in Shopping: Transforming Malls Into Parks

Maybe zombie malls still have a second life — one with a little greenery.

December 8, 2024 - Ruscena Wiederholt

View looking up through large tree with blue sunny sky in background.

Improving South Los Angeles Through Strategic Tree Planting

The University of Southern California Urban Trees Initiative is planting 250 trees in South L.A. neighborhoods to improve shade, combat climate change, and enhance community well-being through collaboration and data-driven approaches.

November 25, 2024 - USC Today

Phoenix, Arizona skyline with mountains in background.

Phoenix Announces Shade Action Plan

The city has outlined 11 strategic priorities aimed at addressing the risks of extreme heat and protecting vulnerable residents from its impacts.

November 22, 2024 - Environmental Energy Leader

Paved walkway with a few people in lush green city park with large trees and benches.

Quantifying How Urban Trees Cool Cities

A new tool can help cities understand the benefits of tree planting efforts at the municipal scale.

November 7, 2024 - Phys.org

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Transportation Planner I

KFH Group Inc.

Director, Strategy and Research

Greater Baltimore Committee

Senior Planner

Eagle County Government

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100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.