Water Vapor Pressure Chart

Temperature (oC)

Pressure
(mm Hg)

Pressure
(kPa)

 

Temperature
(oC)

Pressure
(mm Hg)

Pressure
(kPa)

0.0

4.6

0.61

 

23.0

21.1

2.81

5.0

6.5

0.87

 

23.5

21.7

2.90

10.0

9.2

1.23

 

24.0

22.4

2.98

15.0

12.8

1.71

 

24.5

23.1

3.10

15.5

13.2

1.76

 

25.0

23.8

3.17

16.0

13.6

1.82

 

26.0

25.2

3.36

16.5

14.1

1.88

 

27.0

26.7

3.57

17.0

14.5

1.94

 

28.0

28.3

3.78

17.5

15.0

2.00

 

29.0

30.0

4.01

18.0

15.5

2.06

 

30.0

31.8

4.25

18.5

16.0

2.13

 

35.0

42.2

5.63

19.0

16.5

2.19

 

40.0

55.3

7.38

19.5

17.0

2.27

 

50.0

92.5

12.34

20.0

17.5

2.34

 

60.0

149.4

19.93

20.5

18.1

2.41

 

70.0

233.7

31.18

21.0

18.6

2.49

 

80.0

355.1

47.37

21.5

19.2

2.57

 

90.0

525.8

70.12

22.0

19.8

2.64

 

95.0

633.9

84.53

22.5

20.4

2.72

 

100.0

760.0

101.32

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