@ajsadauskas @wscholermann @Seagoon_ I think it's a combination of different things, pollen, dust, weather, pollution: all of which may be somewhat more localised?
@kudra @ajsadauskas @wscholermann @Seagoon_ someone told me that it's partly to do with the interaction between the prevailing wind from the west and the Dandenong range to the east. also all the evil london plane trees
@luciedigitalni @kudra @wscholermann @Seagoon_ The plane trees makes a lot of sense.
Every time I'm in Melbourne, within a couple of days, I get hayfever. Then when I fly up to Sydney, it clears up within a day or two.
I would be seriously surprised if Sydney has significantly less air pollution than Melbourne.
Sydney has the Blue Mountains, the Royal National Park, and Ku-ring-gai Chase surrounding it on three sides.
So just by process of elimination, that leaves the temperature and pollen from some local plant as potential culprits.