So in general, regarding perishable foods like meat, most dairy, unshelled eggs and shell eggs (in the US) , cooked casseroles, and so on: if the food (or its perishable components) have been at room temperature for more than two hours, you should discard that food.
This directly effects how comfortable it will feel outside. Many times, relative humidity can be misleading. For example, a temperature of 30 and a dew point of 30 will give you a relative humidity of 100%, but a temperature of 80 and a dew point of 60 produces a relative humidity of 50%.
* Lower the indoor humidity so there won't be as much excess moisture vapor in the air. * Take steps to insulate the outside of the glass or at least keep cold air away from it so its inside surface won't get so cold. * Keep warm, moisture-laden air on the inside away from the cold window glass. One of the first things a homeowner can do to lower indoor humidity is to install exhaust fans in the kitchen and the bathrooms so moisture is exhausted to the outside as fast as it is created.