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The term "basement humidity level" refers to the moisture content of the air in a basement. A humidity level above 80 percent encourages mold and mildew development, according to Basement Health Pros. The ideal humidity ... More »

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The ideal humidity level for a basement is between 30 and 50 percent. The prime growing conditions for unwanted mold and spores start at around 60 percent. More »

www.reference.com Home & Garden Heating & Cooling

The ideal humidity for a basement, finished or unfinished, is at or below 50 percent relative humidity. Relative humidity is the percentage of water vapor in the air as compared to the maximum amount it can hold. At 50 p... More »

www.reference.com Home & Garden Home Maintenance
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The actual humidity in terms of the water content of air is typically expressed as grams per kilogram or kilogram per kilogram. Humidity is typically expressed as a percentage of how humid it could physically be at a giv... More »

www.reference.com Science Weather & Tides

Forty-five percent relative humidity is the comfortable relative humidity level. Below 30 percent humidity, the air feels dry, and above 52 percent relative humidity, the air feels very moist. More »

www.reference.com Science Weather & Tides

A psychrometer is a simple form of hygrometer used to measure the level of humidity in the atmosphere. It has a dry-bulb thermometer and a wet-bulb thermometer that work together to measure atmospheric humidity. The dry-... More »

www.reference.com Science Weather & Tides

People are most comfortable whenever the relative humidity level is around 45 percent says HowStuffWorks. A level of 100 percent humidity means that the air is saturated with water vapor and unable to hold more. When thi... More »

www.reference.com Science Weather & Tides