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%.
What Is the Ideal Humidity Level? With all this talk of improving comfort, lowering energy bills and promoting cleaner indoor air, what humidity level should you aim for? In the summer, home humidity should remain between 30 and 45 percent. Measuring indoor humidity is easy with a hygrometer. This small, handheld instrument displays the relative humidity in the room. You can carry it around with you to different rooms and accurately measure the relative humidity throughout your home. Hygrometers are available at your local hardware store.