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%.
If so... Relative humidity is exactly that: it is relative to the temperature. â¦ Warmer air can hold more moisture than cooler air, so if warm air is 40% humid, and cool air is 40% humid, then the warmer air is actually more humid than the cooler air, even though the RELATIVE humidity is the same. Specific humidity is expressed in GPP, or Grains [of water] Per Pound [of air].