The sneezin' season in the northern hemisphere might be getting longer due to climate change, and scientists want to know what that could mean for asthma and hayfever sufferers in Australia.

Since September 1, we’ve been counting pollen on a daily basis at the Parkville campus of the University of Melbourne.

We don’t usually do this. Mostly we count grass pollen.

Noses are already starting to twitch as pollens sweep in with spring. The experts say now is the time to protect yourself against sneezing, asthma and worse. Here's what you need to know.

Melbourne’s grass pollen season is fast approaching and while we’re not expecting much grass pollen in the air until later in October, the outlook is already for a heavier season than 2018.