EQUIVALENT CHILL TEMPERATURE
Air Temperature Celsius
Estimated Wind
Speeds
10 5
-40
(In Km/h)
Equivalent chill temperature (C)
0 calm
10 5 0 -5 -10 -15 -20 -25 -30 -35 -40
8
9 3 -2 -7 -12 -18 -23 -28 -35 -38 -44
16
4 -2 -7 -14 -20 -27 -33 -38 -45 -50 -57
24
2 -5 -1 -18 -25 -32 -38 -45 -52 -58 -65
32
0 -7 -14 -21 -28 -35 -42 -50 -56 -63 -70
40
-1 -1 -16 -24 -31 -38 -46 -53 -60 -67 -76
48
-2 -10 -17 -25 -33 -40 -48 -55 -63 -70 -78
56
-3 -11 -18 -26 -34 -42 -50 -58 -65 -73 -81
64
-3 -11 -19 -27 -35 -43 -51 -59 -66 -74 -82
(wind speed
greater than
64Km/h have little
additional effect)
LOW
HAZARD
Acceptable working conditions,
given proper clothing and
precautions are taken
INCREASING HAZARD
Danger from freezing of
exposed flesh within
one (1) minute
HIGH HAZARD
Flesh may freeze
within thirty (30)
seconds
Risk of
exposure,
dry skin
being
effected in
less one
(1) hour
Estimated Wind
Speeds
35 30 25 20 15 10 5 0 -5 -10 -15 -20
(In MPH)
Equivalent
chill
temperature
(F)
0 calm
35 30 25 20 15 10 5 0 -5 -10 -15
-20
5
32 27 22 16 11 6 0 -5 -10 -15 -21
-26
10
22 16 10 3 -3 -9 -15 -22 -27 -34 -40
-46
15
16 9 2 -5 -11 -18 -25 -31 -38 -45 -51
-58
20
12 4 -3 -10 -17 -24 -31 -39 -46 -53 -60
-67
25
8 1 -7 -15 -22 -29 -36 -44 -51 -59 -66
-74
30
6 -2 -10 -18 -25 -33 -41 -49 -56 -64 -71
-79
35
4 -4 -12 -20 -27 -35 -43 -52 -58 -67 -74
-82
40
3 -5 -13 -21 -29 -37 -45 -53 -60 -69 -76
-84
Acceptable
working
conditions,
INCRE
ASING
HAZAR
D
HIGH
HAZARD
given
proper
clothing
Danger
from
freezing
of
(wind speed greater
than 40 MPH have
little additional effect)
and
precautions
taken
exposed
flesh
within
Flesh may
freeze within
thirty (30)
seconds
one (1)
minute
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