Air Quality Map

Cooler nighttime temperatures are essential for healthy human recovery time from outdoor heat. Compare the tree canopy patterns in Birmingham with how much cooler different parts of town get overnight – areas with higher shade canopy values have greater nighttime cooling, and thus are better for human health.

Poor air quality can cause and worsen respiratory issues, especially in young children. In the Jefferson County study area people still suffer from sooty particles in the air that cause breathing problems. Trees improve air quality by collecting fine particulate pollution on their leaves and absorbing air pollution.

When inhaled, ground-level ozone can induce upper and lower acute respiratory symptoms, reduce lung function, and cause airway inflammation. The lighter the purple color – the more acute respiratory symptoms are avoided due to tree canopy cover.