How urban trees turn down the heat
2023 was the hottest year on record globally, and since then we’ve continued to see temperatures soar. Find out more and how you can make a difference below.
As unprecedented and unbearable heatwaves become the “new abnormal”, soaring temperatures are exacerbated in cities due to the urban heat island effect.
But Trees for Cities is on a mission to combat this - trees work wonders by reducing temperatures on hot days and to date we've planted over 1.7 million.
Heat maps released last year show that across 5 major English cities, areas with more trees and green spaces are up to 5 degrees cooler. The Food and Agriculture Organisation of the United Nations states that strategically planted urban trees can cool the air up to 8 degrees.
Help turn down the heat with a regular gift
To combat urban heat, we’re asking you to consider a regular gift today. You'll help to plant more urban trees than ever before and reduce the escalating effects of the climate crisis.
You can choose how much and how often you give, and you can change or cancel your gift at any time. With your help we can make a difference for people and the planet - thank you.
What's an Urban Heat Island?
Cities are classified as urban heat islands due to their relative warmth compared to rural areas, fuelled by human activities such as transport emissions and concrete surfaces that absorb heat.
70%
of global CO2 emissions are accounted for by cities according to the United Nations Framework Convention on Climate Change
The vast majority of us live in towns and cities: over 80% and rising in the UK. With more of us moving to metropolitan areas, increased temperatures are only set to intensify. The urban heat island effect also contributes to poorer air quality, as well as a rise in heat-related illnesses. So, what can help us manage our safety in cities? Trees are an important part of the solution.
One of the most tangible benefits of trees is around reducing urban heat by between 5 and 8 degrees. It doesn't sound like a lot on its own—but this makes a huge difference to thermal comfort and can also reduce the heat pressure on buildings—the impact of very intense heat.
Suzanne Simmons, Urban Forest Director at Trees for Cities
Trees for Cities told Sky News that we need to shift our focus and funding towards greening urban areas, where the urban heat island effect comes into play:
The need for urban trees for our wellbeing and for the planet is clear. This year Trees for Cities turns 30 and we're on our way to planting our 2 millionth tree, but we can't do it without you.
Sign up to a regular gift today and you'll help grow resilient urban forests, for today and the future.
Protecting trees for future generations
At Trees for Cities, we know that it’s just as critical to care for urban trees as it is to plant them. It can take between 25 and 50 years for a tree to reach the right level of maturity to unlock all of its benefits, so watering and tending to growing trees will get them on the right track to give back. During heatwaves, it's especially vital to water urban trees to make up for this short supply. Did you know you can play your part too?
50 litres
of water is the recommended amount of weekly water to give a tree for its first three years during the summer
Take action today
- Sign up to a regular gift - help plant and protect more trees and make a difference for people and the planet.
- Stay informed - get your monthly dose of tree news by signing up to our newsletter, Tree Times, and stay up-to-date with our events and opportunities.
- Look after your local trees - find out how to water and care for young trees.