Ambulance Victoria paramedics have urged people to take care, with much of the state blanketed in smoke from bushfires.
A smoky haze could be seen throughout much of the Wimmera, Mallee and Grampians yesterday.
Emergency management acting director Justin Dunlop said paramedics had seen a big increase in triple zero calls by people with breathing problems.
He said children and people with pre-existing health conditions were at greatest risk.