The quality of our air is relatively pure. However, activities that release emissions can rapidly degrade its quality.
In summer, the main cause of air pollution in Auckland is transport.
In winter, the main cause is emissions from domestic fires. Wood smoke emits fine particles, an average of 11 tonnes a day, into the air. These particles are so tiny that they can be easily inhaled. They can lead to respiratory diseases and heart ailments.
For more information, see the Our research and evaluation resources.