South-east Queensland’s air quality has been at levels dangerous to health for nearly a fortnight as a result of smoke from bushfires burning across the region.

The ongoing poor air quality prompted the nation’s peak body for asthma awareness to issue a warning to sufferers to be on the alert for signs they were getting into trouble after the extended period of bad air.

National Asthma Council Australia chief executive Siobhan Brophy said with such an extended period of poor air quality, people with existing conditions needed to be especially careful.