Fillable Printable Dew Point Calculation Chart
Fillable Printable Dew Point Calculation Chart
Dew Point Calculation Chart
DEW POINT CALCULATION CHART (FAHRENHEIT)
AT 30 HG BAROMETRIC PRESSURE
Ambient Air Temperature °F
20 30 40 50 60 70 80 90 100 110 120
90
18 28 37 47 57 67 77 87 97 107 117
85
17 26 36 45 55 65 75 84 95 104 113
80
16 25 34 44 54 63 73 82 93 102 110
75
15 24 33 42 52 62 71 80 91 100 108
70
13 22 31 40 50 60 68 78 88 96 105
65
12 20 29 38 47 57 66 76 85 93 103
60
11 19 27 36 45 55 64 73 83 92 101
55
9 17 25 34 43 53 61 70 80 89 98
50
6 15 23 31 40 50 59 67 77 86 94
45
4 13 21 29 37 47 56 64 73 82 91
40
1 11 18 26 35 43 52 61 69 78 87
35
-2 8 16 23 31 40 48 57 65 74 83
% Relative Humidity
30
-6 4 13 20 28 36 44 52 61 69 77
Dew Point: The temperature at which moisture will condense on the surface. No coatings
should be applied unless the surface temperature is a minimum of 5°F above this
point. Temperature must be maintained during curing.
Example: If air temperature is 70°F and relative humidity is 65%, the dew point is 57°F. No
coating should be applied unless the surface temperature is 62°F minimum.
