The urban heat island effect is a warming effect. Unban means 'city'. Buildings and roads retain more heat and warm the air around them, so cities are warmer then the countryside.

The Urban Heat Island effect is one major impact in the urban area. The Urban Heat Island effect is when the temperature in a city rapidly increases. One solution to this problem is planting more trees for shade. Another solution is installing rooftops that reflect rather than retain heat.

Monthly rainfall is greater downwind of cities, partially due to the UHI. Increases in heat within urban centers increases the length of growing seasons, and decreases the occurrence of weak tornadoes. The UHI decreases air quality by increasing the production of pollutants such as ozone, and decreases water quality as warmer waters flow into area streams, which stresses their ecosystems. Not all cities have a distinct urban heat island. Mitigation of the urban heat island effect can be accomplished through the use of green roofs and the use of lighter-colored surfaces in urban areas, which reflect more sunlight and absorb less heat.

Despite concerns raised about its possible contribution to global warming, comparisons between urban and rural areas show that the urban heat island effects have little influence on global mean temperature trends.

it can be made from renewable sources and lower the temperature of urban heat island.

it can be made from renewable sources and lower the temperature of urban heat island.