Counting the levels of pollen in Sydney’s air means we can tell people who suffer from debilitating allergy conditions, such as asthma and hay fever, of days that are forecast to have high pollen levels. This information allows them to take preventative measures such as staying indoors or having their medication close at hand.

Grass pollen is the major pollen type responsible for seasonal allergies in the Sydney region so our counts and forecasts are for grass pollen.