HEALTH officials are warning Queenslanders with respiratory issues to take precautions, after gusty winds kicked up dust in the state's southwest.

A Bureau of Meteorology spokeswoman said the wind following a line of storms which hit the southeast this afternoon would bring dusty conditions, potentially enough to inflame an asthma attack or allergic reaction.

The spokeswoman said the gusty winds associated with the trough were pushing the dust storm into the southeast, which was sitting above the Marinowa as of 1.30pm AEST.

She said that while the dust storm was weakening, the southeast would be "not as bad as Sydney, but hazy on the horizon" for this afternoon, but that conditions would clear by Friday.

Queensland Health has tweeted that those with respiratory illnesses should avoid the outdoors, close their windows and seek medical assistance if they experience any coughing or wheezing.

>>RELATED: Dust storm 'size of Tasmania' about to hit east coast

Further south, were the storm's intensity is far greater, Sydney's sky is beginning to change colour as the thick line of dust - which is "the size of Tasmania" and stretches almost the entire length of NSW - reaches the city, news.com.au reports.

Strong winds from a low-pressure system has whipped up masses of dirt across the drought-stricken state, which is steadily heading to the coast.

A line of dust up more than 500km long can be seen from the Victorian border, through Canberra and up to Queensland.