Summarize the following:
Keep the airtight container with your pavlova on your counter, in a pantry, or in a cupboard where temperature and humidity are consistent. Make sure to keep your pavlova away from your stove and other sources of heat and moisture.  Take special care to keep your pavlova away from windows. Exposure to direct sunlight will ruin it. Your oven, when turned off and cool, is a good place to store your pavlova. Just don’t forget that you have it in there!

Summary:
Keep your pavlova in a dry, cool place.