A prefix is a word part added to the  beginning of a word to create a new word with a different  meaning.    Examples: refill, undo,  incomplete, precooked   â¦  (Letters added to the end of a root or word are a suffix.). + 213 others found this useful. Caroline Russell.
Its not uncommon to have above 90% relative humidity readings. I find it uncomfortable once the humidity is over 70%, but I'm really not a 'good' test subject as I have lived in Florida all my life and have gotten use to high humidities. I can tell you one thing with certainity, the insects love the high readings! 60% is a threshold in the summer.
According to the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), the ideal humidity range for humans is between 30 to 60 percent relative humidity. The ideal is somewhere around 45-55%. Very high levels of humidity contribute to the growth of mold, funguses, dust mites, and other pests. Mold contributes to a number of diseases and thrives in humid climates, generally above 60 percent humidity.