Children are still developing their organs and immune systems and their smaller bodies and airways make them especially vulnerable to dirty air and water.
Because of their size, children are also often closer to sources of air pollution, like car exhausts, than adults.
Air pollution can play a part in causing asthma for some children. For children who already have asthma, being exposed to more air pollution can increase how bad their symptoms are and how often they have chronic symptoms.
Being exposed to air pollution can also affect children’s lung function development. In areas with high air pollution, it could be setting some children up for health problems throughout their lives.
Research is beginning to point towards effects of air pollution on children’s developing brains, but more research is needed in this area.