Victoria recorded 1923 COVID-19 cases and 25 deaths in the 24 hours to midnight, bringing the total active cases in the state to 22,189.
There are 746 patients with coronavirus in hospitals, 137 in ICU and 85 ventilated.
The state now has 77 per cent of the population aged 16 years and over fully vaccinated.
Yesterday, 21,272 vaccine doses were administered in state-run clinics, bringing the total doses given to 4,530,573.
There were 82,648 tests done yesterday, which was down on the previous day's total of 83,210.
Victorian health authorities have issued the first thunderstorm asthma alert for the season, with authorities warning hospitals are already dealing with COVID-19 patients.
The state's southwest, Wimmera and Mallee districts will be high risk areas on Thursday.
"The combination of forecast high grass pollen levels and severe thunderstorms with strong winds means that there is a chance that a large number of people may develop asthma symptoms over a short period of time," the warning says.
"Our hospitals are experiencing significant demand due to COVID-19, so it's important you stay well."
Those at risk are being advised to avoid being outdoors during storms and the winds that precede them, and remember to take preventative medication.
A thunderstorm asthma event in 2016 killed nine people and saw thousands more hospitalised.
- with Australian Associated Press