Urban Heat Current Challenges and Uprising Solutions

The Greater Bay Area, a highly urbanized and fast-growing region currently faces a rising challenge against heat due to their massive infrastructure. The creation of these urban heat islands (UHI) are due to a lack of vegetation in a region as greater numbers of people and structures accumulate in one area of land. Urban heat in cities such as Guangzhou, Hong Kong, and Shenzhen have led to the health concerns of many citizens ranging from young children to the elderly. 

This uprise in heat has been a cause of many health issues such as heatstrokes and cardiovascular stress. These issues have led to the early death among many youth who overexert themselves outdoors along with elderly who struggle to adjust to the change (Texas A&M Health). As a result, civilians and organizations are currently working on greater plans to diminish the urban heat and help restore the greater bay area to its former temperatures.

The image above shows cities in Southern China and their Urban heat index rise over 15 years.

One way which the region has worked in response against rising urban heat includes creating green spaces where vegetation and agriculture can thrive (Kishore). These green spaces include vegetation such as large trees which take in more carbon dioxide and a large variety of crops which help to cool vast areas due to their greater mass number. As of now, the World Health Organization (WHO) sets a minimum requirement of around 97 square feet of space taken up as a green zone. However, most range from 120-520 square feet (Russo and Cirella).

Additionally, places titled “cooling zones” are in the process of being built where different material that prevents heat gets used to create large infrastructures. White roofs and cement concrete in replacement of darker colors or black asphalt are some of many changes that are being put into action as the Greater Bay Area works to build light-reflecting structures (NSW Government Planning). The developing infrastructure is believed to aid in reducing local temperatures by up to 4°C alongside a 13% decline in household energy used as seen from the practices of nearby nations (Wesley et al.). 

Altogether, urban heat in the Greater Bay Area has continued to expand, leading the region to becoming one of the greatest urban heat islands in the world. With these changes in temperature comes the responsibility of the community and its officials to help prevent further heat rising in order to maintain the health and well-being of all located here.

By Xarina Y. Zaqtan

Bibliography

Kishore, Kamal. “Ten Actions to Combat Extreme Heat.” 4 Feb. 2025.

NSW Government Planning. “Cool Materials.” Planning, 24 Apr. 2025, https://www.planning.nsw.gov.au/the-planning-system/resilience-and-natural-hazard-risk/urban-heat/cooler-places/cool-materials. Accessed 29 July 2026.

Pave Technology Inc. “UHI Mitigation.” 2025.

Russo, Alessio, and Giuseppe Cirella. “Modern Compact Cities: How Much Greenery Do We Need?” International Journal of Environmental Research and Public Health, vol. 15, no. 10, 5 Oct. 2018, p. 2180, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6209905/, 10.3390/ijerph15102180. Accessed 28 Aug. 2026.

Texas A&M Health. “Urban Heat Island Effect: How Cities Impact Community Health.” 2026.

Wesley, Elizabeth Jane, et al. “Cities Are Heating up. Better Infrastructure Can Cool Them Down..” World Resources Institute, 2025, https://www.wri.org/insights/urban-heat-effect-solutions. Accessed 28 Aug. 2026.

Zhou, Chunshan, et al. Spatio–Temporal Evolution and Factors of Climate Comfort for Urban Human Settlements in the Guangdong–Hong Kong–Macau Greater Bay Area. Sept. 2022.