Green Infrastructure: The Cool Solution for Urban Heat

By Cate Kirui, Founder and CEO of Green Circle Foundation

As cities around the globe face increasingly severe heatwaves, a promising solution is emerging from an unexpected source: greenery. Recent research underscores the potential of green infrastructure to combat urban heat, offering both immediate and long-term benefits.

Ground-level greenery, such as parks and tree-lined streets, has been shown to lower peak surface temperatures by 2-9 degrees Celsius. More impressively, green roofs and walls can achieve reductions of up to 17 degrees Celsius. These cooling effects not only improve comfort but also reduce the need for air conditioning, leading to lower energy consumption and utility bills.

The challenge now lies in integrating these findings into effective urban planning. Cities must strategically incorporate green spaces throughout their landscapes to maximize cooling benefits. This includes creating a network of parks, prioritizing tree planting over lawn areas, and applying multiple green strategies in areas with the highest heat exposure.

However, translating scientific research into practical urban design is essential for achieving these benefits. The Green Circle Foundation advocates for the development of comprehensive guidelines that can help cities implement green infrastructure more effectively.

As cities continue to expand and temperatures rise, embracing green infrastructure is not just an option but a necessity. By investing in these cooling solutions, urban areas can become more resilient, sustainable, and comfortable for their residents.

Cate Kirui
Founder and CEO
Green Circle Foundation