Dew point table

The dew point table specifies at which surface temperature condensate forms. This depends on the temperature of the air and the relative humidity.

Dew point table in °C

Example:

Ambient temperature: 32 °C, humidity: 60 %
The temperature of the cooling circuit may not be less than 23 °C, else condensate will form!

 

Ambient
air temperature
in °C

Dew point in °C at a relative humidity of

45%

50%

55%

60%

65%

70%

75%

80%

85%

90%

95%

2

-7.70

-6.26

-5.43

-4.40

-3.16

-2.48

-1.77

-0.98

-0.26

0.47

1.20

4

-6.11

-4.88

-3.69

-2.61

-1.79

-0.88

-0.09

0.78

1.62

2.44

3.20

6

-4.49

-3.07

-2.10

-1.05

-0.08

0.85

1.86

2.72

3.62

4.48

5.38

8

-2.69

-1.61

-0.44

0.67

1.80

2.83

3.82

4.77

5.66

6.48

7.32

10

-1.26

0.02

1.31

2.53

3.74

4.79

5.82

6.79

7.65

8.45

9.31

12

0.35

1.84

3.19

4.46

5.63

6.74

7.75

8.69

9.60

10.48

11.33

14

2.20

3.76

5.10

6.40

7.58

8.67

9.70

10.71

11.64

12.55

13.36

15

3.12

4.65

6.07

7.36

8.52

9.63

10.70

11.69

12.62

13.52

14.42

16

4.07

5.59

6.98

8.29

9.47

10.61

11.68

12.66

13.63

14.58

15.54

17

5.00

6.48

7.62

9.18

10.39

11.48

12.54

13.57

14.50

15.36

16.19

18

5.90

7.43

8.83

10.12

11.33

12.44

13.48

14.56

15.41

16.31

17.25

19

6.80

8.33

9.75

11.09

12.26

13.37

14.49

15.47

16.40

17.37

18.22

20

7.73

9.30

10.72

12.00

13.22

14.40

15.48

16.46

17.44

18.36

19.18

21

8.60

10.22

11.59

12.92

14.21

15.36

16.40

17.44

18.41

19.27

20.19

22

9.54

11.16

12.52

13.89

15.19

16.27

17.41

18.42

19.39

20.28

21.22

23

10.44

12.02

13.47

14.87

16.04

17.29

18.37

19.37

20.37

21.34

22.23

24

11.34

12.93

14.44

15.73

17.06

18.21

19.22

20.33

21.37

22.32

23.18

25

12.20

13.83

15.37

16.69

17.99

19.11

20.24

21.35

22.27

23.30

24.22

26

13.15

14.84

16.26

17.67

18.90

20.09

21.29

22.32

23.32

24.31

25.16

27

14.08

15.68

17.24

18.57

19.83

21.11

22.23

23.31

24.32

25.22

26.10

28

14.96

16.61

18.14

19.38

20.86

22.07

23.18

24.28

25.25

26.20

27.18

29

15.85

17.58

19.04

20.48

21.83

22.97

24.20

25.23

26.21

27.26

28.18

30

16.79

18.44

19.96

21.44

23.71

23.94

25.11

26.10

27.21

28.19

29.09

32

18.62

20.28

21.90

23.26

24.65

25.79

27.08

28.24

29.23

30.16

31.17

34

20.42

22.19

23.77

25.19

26.54

27.85

28.94

30.09

31.19

32.13

33.11

36

22.23

24.08

25.50

27.00

28.41

29.65

30.88

31.97

33.05

34.23

35.06

38

23.97

25.74

27.44

28.87

30.31

31.62

32.78

33.96

35.01

36.05

37.03

40

25.79

27.66

29.22

30.81

32.16

33.48

34.69

35.86

36.98

38.05

39.11

45

30.29

32.17

33.86

35.38

36.85

38.24

39.54

40.74

41.87

42.91

44.03

50

34.76

36.63

38.46

40.09

41.58

42.99

44.33

45.55

46.75

47.90

48.98

Dew point table in °F

Example:

Ambient temperature: 89.6 °F, humidity: 60 %
The temperature of the cooling circuit may not be less than 73.8 °F, else condensate will form!

 

Ambient
air temperature
in °F

Dew point in °F at a relative humidity of

45%

50%

55%

60%

65%

70%

75%

80%

85%

90%

95%

35.6

18.14

20.73

22.23

24.08

26.31

27.54

28.81

30.24

31.53

32.85

34.16

39.2

21.00

23.22

25.36

27.30

28.78

30.42

32.16

33.40

34.92

36.39

37.76

42.8

23.92

26.47

28.22

30.11

31.86

33.53

35.35

36.90

38.52

40.06

41.68

46.4

27.16

29.10

31.21

33.21

35.24

37.09

38.88

40.59

42.19

43.66

45.18

50

29.73

32.04

34.36

36.55

38.73

40.62

42.48

44.22

45.77

47.21

48.76

53.6

32.63

35.31

37.74

40.03

42.13

44.13

45.95

47.64

49.28

50.86

52.39

57.2

35.96

38.77

41.18

43.52

45.64

47.61

49.46

51.28

52.95

54.59

56.05

59

37.62

40.37

42.93

45.25

47.34

49.33

51.26

53.04

54.72

56.34

57.96

60.8

39.33

42.06

44.56

46.92

49.05

51.10

53.02

54.79

56.53

58.24

59.97

62.6

41.00

43.66

45.72

48.52

50.70

52.66

54.57

56.43

58.10

59.65

61.14

64.4

42.62

45.37

47.89

50.22

52.39

54.39

56.26

58.21

59.74

61.36

63.05

66.2

44.24

46.99

49.55

51.96

54.07

56.07

58.08

59.85

61.52

63.27

64.80

68

45.91

48.74

51.30

53.60

55.80

57.92

59.86

61.63

63.39

65.05

66.52

69.8

47.48

50.40

52.86

55.26

57.58

59.65

61.52

63.39

65.14

66.69

68.34

71.6

49.17

52.09

54.54

57.00

59.34

61.29

63.34

65.16

66.90

68.50

70.20

73.4

50.79

53.64

56.25

58.77

60.87

63.12

65.07

66.87

68.67

70.41

72.01

75.2

52.41

55.27

57.99

60.31

62.71

64.78

66.60

68.59

70.47

72.18

73.72

77

53.96

56.89

59.67

62.04

64.38

66.40

68.43

70.43

72.09

73.94

75.60

78.8

55.67

58.71

61.27

63.81

66.02

68.16

70.32

72.18

73.98

75.76

77.29

80.6

57.34

60.22

63.03

65.43

67.69

70.00

72.01

73.96

75.78

77.40

78.98

82.4

58.93

61.90

64.65

66.88

69.55

71.73

73.72

75.70

77.45

79.16

80.92

84.2

60.53

63.64

66.27

68.86

71.29

73.35

75.56

77.41

79.18

81.07

82.72

86

62.22

65.19

67.93

70.59

74.68

75.09

77.20

78.98

80.98

82.74

84.36

89.6

65.52

68.50

71.42

73.87

76.37

78.42

80.74

82.83

84.61

86.29

88.11

93.2

68.76

71.94

74.79

77.34

79.77

82.13

84.09

86.16

88.14

89.83

91.60

96.8

72.01

75.34

77.90

80.60

83.14

85.37

87.58

89.55

91.49

93.61

95.11

100.4

75.15

78.33

81.39

83.97

86.56

88.92

91.00

93.13

95.02

96.89

98.65

104

78.42

81.79

84.60

87.46

89.89

92.26

94.44

96.55

98.56

100.49

102.40

113

86.52

89.91

92.95

95.68

98.33

100.83

103.17

105.33

107.37

109.24

111.25

122

94.57

97.93

101.23

104.16

106.84

109.38

111.79

113.99

116.15

118.22

120.16