The goal is to increase the tree canopy to 30 percent of all neighborhoods to combat the urban heat island effect as well as the impact of climate change. In some neighborhoods, summer temperatures can get much higher than the city average — as much as 20 degrees — because they lack tree cover. Hunting Park in North Philadelphia, Point Breeze in South Philadelphia, and Cobbs Creek in West Philadelphia are a few examples of communities with lots of rowhouses but little greenery. They stand in stark contrast to neighborhoods such as Chestnut Hill and Mount Airy in the Northwest, and Somerton in the Northeast, all of which boast tree-lined streets and shady parks.