Dew Point Comfort Scale

Dew point Human perception Relative humidity at 90°F
Over 80°F Severely high, even deadly for asthma related illnesses 73% and higher
75-80°F Extremely uncomfortable, oppressive 62-72%
70-74°F Very humid, uncomfortable 52-61%
65-69°F May be uncomfortable at upper edge 44-51%
60-64°F OK for most 37-43%
55-59°F Comfortable 31-36%
50-54°F Very comfortable 26-30%
Under 50°F A bit dry for some 25% and lower