Relative Humidity Calculations with a
Decrease in Temperature

 

4:00PM   8:00PM 12:00AM 4:00AM 6:00AM

32/90

T oC/oF 29/84 25/77 20/68 17/63
14.95 MR (g/kg)        
  SMR (g/kg)        
  RH        

MR = Mixing Ratio - Actual amount of water vapor (gas) in the atmosphere.

SMR - Saturated Mixing Ratio - Maximum amount of water vapor (gas) the
             atmosphere can hold.

Saturated Mixing Ratios of Water Vapor

Temperature oC

Grams of vapor per kilogram of Dry Air

50

88.12

45

66.33

40

49.81

35

37.25

34

35.29

33

33.39

32

31.49

31

29.59

30

27.69

29

26.24

28

24.79

27

23.34

26

21.89

25

20.44

24

19.29

23

18.12

22

17.07

21

16.15

20

14.95

19

13.98

18

13.12

17

12.56

16

11.42

15

10.83

10

7.76

5

5.50

0

3.84

-5

2.644