Code of Federal Regulations Title 5. Administrative Personnel 5 CFR Pt. 550, Subpt. I, App. A-1 Appendix A–1 to Subpart I of Part 550 Windchill Chart

Local Temperature (°C)

Wind Speed (KPH)

0

-5

-10

-15

-20

-25

-30

-35

-40

-45

-50

Calm

0 C

-5

-10

-15

-20

-25

-30

-35

-40

-45

-50

8

-2

-7

-12

-17

-23

-28

-33

-38

-44

-49

-54

16

-8

-14

-20

-26

-32

-38

-44

-51

-57

-63

-69

24

-11

-18

-25

-32

-38

-45

-51

-58

-65

-72

-78

32

-14

-21

-28

-36

-42

-49

-57

-64

-71

-78

-85

40

-16

-23

-31

-39

-46

-53

-61

-68

-76

-83

-90

48

-17

-24

-33

-41

-48

-56

-63

-72

-78

-86

-94

56

-18

-26

-34

-42

-49

-57

-65

-73

-81

-88

-97

64

-19

-27

-35

-43

-51

-59

-66

-74

-82

-91

-98

72

-19

-28

-36

-43

-52

-59

-67

-76

-83

-91

-99

80

-20

-28

-36

-44

-52

-60

-68

-76

-84

-92

-100

Little danger

Considerable danger

Very great danger

For properly clothed persons

Danger of freezing of exposed flesh

Local Temperature (°F)

Wind

Speed

32

23

14

5

-4

-13

-22

-31

-40

-49

-58

(MPH)

Calm

32

23

14

5

-4

-13

-22

-31

-40

-49

-58

5

29

20

10

1

-9

-18

-28

-37

-47

-56

-65

10

18

7

-4

-15

-26

-37

-48

-59

-70

-81

-92

15

13

-1

-13

-25

-37

-49

-61

-73

-85

-97

-109

20

7

-6

-19

-32

-44

-57

-70

-83

-96

-109

-121

25

3

-10

-24

-37

-50

-64

-77

-90

-104

-117

-130

30

1

-13

-27

-41

-54

-68

-82

-97

-109

-123

-137

35

-1

-15

-29

-43

-57

-71

-85

-99

-113

-127

-142

40

-3

-17

-31

-45

-59

-74

-87

-102

-116

-131

-145

45

-3

-18

-32

-46

-61

-75

-89

-104

-118

-132

-147

50

-4

-18

-33

-47

-62

-76

-91

-105

-120

-134

-148

Little

Considerable

Very Great Danger

Danger

Danger

For Properly

Clothed Persons

Danger From Freezing of Exposed Flesh