The ACT Emergency Services Agency advises us not to worry, the smoke is from fires on the South Coast.
2/10/2009 Smoke haze
The ESA advise the current smoke haze over parts of Canberra is coming from bushfires currently burning on the NSW South Coast.
There are no bushfires currently burning in the ACT.
For more information on bushfires in NSW go to http://www.rfs.nsw.gov.au.