Greater Brisbane has been blanketed in thick fog for the second time this week, prompting the Bureau of Meteorology (BOM) to issue an alert for dangerous road conditions.
But today the pea soup was more widespread, with patches of fog impacting cities along the Queensland coast all the way north to Townsville.
BOM forecaster Matthew Bass said it was a "similar event" to what Brisbane experienced on Tuesday, but heavier today in outer suburbs.
"Maybe a little bit more extensive through southern parts of Brisbane, down towards the Logan area," he said.
"Out west [of Brisbane] it is maybe a little bit more extensive but relatively similar to what we saw a couple of days ago."
Mr Bass said visibility was down to 100 metres in parts of south-east Queensland, and down to 2,000 metres at the Brisbane Airport at 6am.
Lord Mayor Adrian Schrinner said Brisbane ferry and CityCats were running a "little slower" due to the fog.
With visibility so low, police asked commuters to drive with caution.
Brisbane Airport spokesperson Peter Doherty said there were "minor delays" for flights on Thursday morning and no flight diversions.
"There were very minor delays between about 7:30am and 8:30am this morning, when that fog reduced visibility on the ground," he said.
"Blue skies have returned to the airport, with that fog clearing off and heading out into Moreton Bay."
The fog cleared by 9am or slightly later in most places.
