By Bushra Ali 

Writer/Reporter

As summers continues, we all can experience how much heat we still encounter when we go outside, even when expecting a normal summer afternoon. The sidewalks feel warm beneath our feet, the air barely moves, and even the shade doesn’t seem to offer much relief. You might think you are simply experiencing a particularly hot day. But in many cities, there is another factor making that heat even worse: the cities themselves.

Cities are often warmer than the areas surrounding them because of something called the urban heat island effect. Think about what makes up most cities: roads, parking lots, sidewalks, rooftops and concrete buildings. These surfaces absorb heat from the sun during the day and slowly release it afterward. Unlike trees and vegetation, concrete and asphalt do not provide much natural cooling. As a result, an urban area can remain hot long after the sun has gone down. In short, we can say that city centers can be several degrees warmer than surrounding rural areas because of this effect.

And that nighttime heat matters. When temperatures remain high after sunset, the body gets less opportunity to recover from the heat of the day. Sleeping becomes more difficult, especially for people without reliable air conditioning or access to cooler spaces. Prolonged exposure to extreme heat can also increase the risk of heat exhaustion, heatstroke and other health problems. 

Not every neighborhood experiences this heat in the same way. A street lined with large trees can feel completely different from one surrounded by parking lots and concrete. Trees provide shade and release water through a process that helps cool the surrounding environment. 

The problem becomes even more serious when extreme heat arrives during a heat wave. As temperatures rise, people turn to air conditioning and other cooling systems, increasing electricity demand. Power grids can come under additional pressure at exactly the time people need them most.

So cities are beginning to rethink how they are built. More trees and parks, shaded sidewalks, reflective roofs and other forms of green infrastructure can help reduce the amount of heat trapped in urban environments. These changes are not simply about making a city look nicer. They can make neighborhoods safer and more comfortable as extreme heat becomes more frequent and intense. 

The strange thing about urban heat is that there is no single source to point to. There is no storm approaching and no rising river to warn us. The danger can simply build throughout the day and sometimes stay through the night. And as cities continue to grow, the question may no longer be just how hot the weather will become. It may also be about how much heat our cities are built to hold.