An aerosol-generating device comprises a vaporization element having an outlet and is configured to vaporize a liquid. An airflow passage extends from the outlet of the vaporization element and is configured to convey vapor to an outlet of the aerosol-generating device. A hot air channel is configured to direct heated air towards the outlet of the vaporization element, and a dilution air channel is configured to direct ambient air into the device and to mix the ambient air with the vapor conveyed in the airflow passage to form an aerosol.