Charts, Graphs, & Diagrams > Health Charts > Wind Chill
Find the wind chill based on temperature and wind speed. Protect yourself and your children from extreme cold.
| W i n d S p e e d (mph) |
Temperature °F | W i n d S p e e d (mph) |
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| 40 | 38 | 36 | 34 | 32 | 30 | 28 | 26 | 24 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | 8 | 6 | 4 | 2 | 0 | -2 | -4 | -6 | -8 | -10 | -12 | -14 | -16 | -18 | -20 | -22 | -24 | -26 | -28 | -30 | -32 | -34 | -36 | -38 | -40 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 37 | 35 | 33 | 30 | 28 | 26 | 23 | 21 | 19 | 17 | 14 | 12 | 10 | 7 | 5 | 3 | 0 | -2 | -4 | -7 | -9 | -11 | -14 | -16 | -18 | -20 | -23 | -25 | -27 | -30 | -32 | -34 | -37 | -39 | -41 | -44 | -46 | -48 | -50 | -53 | -55 | 4 | ||
| 6 | 36 | 33 | 31 | 29 | 26 | 24 | 21 | 19 | 17 | 14 | 12 | 10 | 7 | 5 | 2 | 0 | -2 | -5 | -7 | -9 | -12 | -14 | -17 | -19 | -21 | -24 | -26 | -29 | -31 | -33 | -36 | -38 | -40 | -43 | -45 | -48 | -50 | -52 | -55 | -57 | -60 | 6 | ||
| 8 | 35 | 32 | 30 | 27 | 25 | 22 | 20 | 18 | 15 | 13 | 10 | 8 | 5 | 3 | 0 | -2 | -4 | -7 | -9 | -12 | -14 | -17 | -19 | -21 | -24 | -26 | -29 | -31 | -34 | -36 | -38 | -41 | -43 | -46 | -48 | -51 | -53 | -56 | -58 | -60 | -63 | 8 | ||
| 10 | 34 | 31 | 29 | 26 | 24 | 21 | 19 | 16 | 14 | 11 | 9 | 6 | 4 | 1 | -1 | -4 | -6 | -8 | -11 | -13 | -16 | -18 | -21 | -23 | -26 | -28 | -31 | -33 | -36 | -38 | -41 | -43 | -46 | -48 | -51 | -53 | -56 | -58 | -61 | -63 | -66 | 10 | ||
| 12 | 33 | 30 | 28 | 25 | 23 | 20 | 18 | 15 | 13 | 10 | 8 | 5 | 3 | 0 | -2 | -5 | -7 | -10 | -12 | -15 | -17 | -20 | -22 | -25 | -28 | -30 | -33 | -35 | -38 | -40 | -43 | -45 | -48 | -50 | -53 | -55 | -58 | -60 | -63 | -65 | -68 | 12 | ||
| 14 | 32 | 30 | 27 | 25 | 22 | 19 | 17 | 14 | 12 | 9 | 7 | 4 | 2 | -1 | -4 | -6 | -9 | -11 | -14 | -16 | -19 | -21 | -24 | -26 | -29 | -32 | -34 | -37 | -39 | -42 | -44 | -47 | -49 | -52 | -54 | -57 | -60 | -62 | -65 | -67 | -70 | 14 | ||
| 16 | 32 | 29 | 26 | 24 | 21 | 19 | 16 | 14 | 11 | 8 | 6 | 3 | 1 | -2 | -5 | -7 | -10 | -12 | -15 | -17 | -20 | -23 | -25 | -28 | -30 | -33 | -35 | -38 | -41 | -43 | -46 | -48 | -51 | -53 | -56 | -59 | -61 | -64 | -66 | -69 | -71 | 16 | ||
| 18 | 31 | 28 | 26 | 23 | 21 | 18 | 15 | 13 | 10 | 8 | 5 | 2 | 0 | -3 | -5 | -8 | -11 | -13 | -16 | -18 | -21 | -24 | -26 | -29 | -31 | -34 | -37 | -39 | -42 | -44 | -47 | -50 | -52 | -55 | -57 | -60 | -63 | -65 | -68 | -70 | -73 | 18 | ||
| 20 | 30 | 28 | 25 | 23 | 20 | 17 | 15 | 12 | 9 | 7 | 4 | 2 | -1 | -4 | -6 | -9 | -12 | -14 | -17 | -19 | -22 | -25 | -27 | -30 | -32 | -35 | -38 | -40 | -43 | -46 | -48 | -51 | -53 | -56 | -59 | -61 | -64 | -67 | -69 | -72 | -74 | 20 | ||
| 22 | 30 | 27 | 25 | 22 | 19 | 17 | 14 | 12 | 9 | 6 | 4 | 1 | -2 | -4 | -7 | -10 | -12 | -15 | -18 | -20 | -23 | -26 | -28 | -31 | -33 | -36 | -39 | -41 | -44 | -47 | -49 | -52 | -55 | -57 | -60 | -63 | -65 | -68 | -70 | -73 | -76 | 22 | ||
| 24 | 30 | 27 | 24 | 22 | 19 | 16 | 14 | 11 | 8 | 6 | 3 | 0 | -2 | -5 | -8 | -10 | -13 | -16 | -18 | -21 | -24 | -26 | -29 | -32 | -34 | -37 | -40 | -42 | -45 | -48 | -50 | -53 | -56 | -58 | -61 | -64 | -66 | -69 | -72 | -74 | -77 | 24 | ||
| 26 | 29 | 27 | 24 | 21 | 18 | 16 | 13 | 10 | 8 | 5 | 2 | 0 | -3 | -6 | -8 | -11 | -14 | -16 | -19 | -22 | -24 | -27 | -30 | -33 | -35 | -38 | -41 | -43 | -46 | -49 | -51 | -54 | -57 | -59 | -62 | -65 | -67 | -70 | -73 | -75 | -78 | 26 | ||
| 28 | 29 | 26 | 23 | 21 | 18 | 15 | 13 | 10 | 7 | 5 | 2 | -1 | -4 | -6 | -9 | -12 | -14 | -17 | -20 | -22 | -25 | -28 | -31 | -33 | -36 | -39 | -41 | -44 | -47 | -49 | -52 | -55 | -58 | -60 | -63 | -66 | -68 | -71 | -74 | -76 | -79 | 28 | ||
| 30 | 28 | 26 | 23 | 20 | 18 | 15 | 12 | 9 | 7 | 4 | 1 | -1 | -4 | -7 | -10 | -12 | -15 | -18 | -20 | -23 | -26 | -29 | -31 | -34 | -37 | -39 | -42 | -45 | -48 | -50 | -53 | -56 | -58 | -61 | -64 | -67 | -69 | -72 | -75 | -77 | -80 | 30 | ||
| 32 | 28 | 25 | 23 | 20 | 17 | 14 | 12 | 9 | 6 | 4 | 1 | -2 | -5 | -7 | -10 | -13 | -16 | -18 | -21 | -24 | -27 | -29 | -32 | -35 | -37 | -40 | -43 | -46 | -48 | -51 | -54 | -57 | -59 | -62 | -65 | -67 | -70 | -73 | -76 | -78 | -81 | 32 | ||
| 34 | 28 | 25 | 22 | 20 | 17 | 14 | 11 | 9 | 6 | 3 | 0 | -2 | -5 | -8 | -11 | -13 | -16 | -19 | -22 | -24 | -27 | -30 | -33 | -35 | -38 | -41 | -44 | -46 | -49 | -52 | -55 | -57 | -60 | -63 | -66 | -68 | -71 | -74 | -77 | -79 | -82 | 34 | ||
| 36 | 28 | 25 | 22 | 19 | 16 | 14 | 11 | 8 | 5 | 3 | 0 | -3 | -6 | -8 | -11 | -14 | -17 | -19 | -22 | -25 | -28 | -30 | -33 | -36 | -39 | -41 | -44 | -47 | -50 | -53 | -55 | -58 | -61 | -64 | -66 | -69 | -72 | -75 | -77 | -80 | -83 | 36 | ||
| 38 | 27 | 24 | 22 | 19 | 16 | 13 | 11 | 8 | 5 | 2 | -1 | -3 | -6 | -9 | -12 | -14 | -17 | -20 | -23 | -25 | -28 | -31 | -34 | -37 | -39 | -42 | -45 | -48 | -50 | -53 | -56 | -59 | -62 | -64 | -67 | -70 | -73 | -75 | -78 | -81 | -84 | 38 | ||
| 40 | 27 | 24 | 21 | 19 | 16 | 13 | 10 | 7 | 5 | 2 | -1 | -4 | -6 | -9 | -12 | -15 | -18 | -20 | -23 | -26 | -29 | -32 | -34 | -37 | -40 | -43 | -45 | -48 | -51 | -54 | -57 | -59 | -62 | -65 | -68 | -71 | -73 | -76 | -79 | -82 | -84 | 40 | ||
| 42 | 27 | 24 | 21 | 18 | 15 | 13 | 10 | 7 | 4 | 2 | -1 | -4 | -7 | -10 | -12 | -15 | -18 | -21 | -24 | -26 | -29 | -32 | -35 | -38 | -40 | -43 | -46 | -49 | -52 | -54 | -57 | -60 | -63 | -66 | -68 | -71 | -74 | -77 | -80 | -82 | -85 | 42 | ||
| 44 | 26 | 24 | 21 | 18 | 15 | 12 | 10 | 7 | 4 | 1 | -2 | -4 | -7 | -10 | -13 | -16 | -19 | -21 | -24 | -27 | -30 | -33 | -35 | -38 | -41 | -44 | -47 | -49 | -52 | -55 | -58 | -61 | -63 | -66 | -69 | -72 | -75 | -78 | -80 | -83 | -86 | 44 | ||
| 46 | 26 | 23 | 21 | 18 | 15 | 12 | 9 | 6 | 4 | 1 | -2 | -5 | -8 | -10 | -13 | -16 | -19 | -22 | -25 | -27 | -30 | -33 | -36 | -39 | -42 | -44 | -47 | -50 | -53 | -56 | -58 | -61 | -64 | -67 | -70 | -73 | -75 | -78 | -81 | -84 | -87 | 46 | ||
| 48 | 26 | 23 | 20 | 17 | 15 | 12 | 9 | 6 | 3 | 0 | -2 | -5 | -8 | -11 | -14 | -17 | -19 | -22 | -25 | -28 | -31 | -34 | -36 | -39 | -42 | -45 | -48 | -50 | -53 | -56 | -59 | -62 | -65 | -67 | -70 | -73 | -76 | -79 | -82 | -84 | -87 | 48 | ||
| 50 | 26 | 23 | 20 | 17 | 14 | 12 | 9 | 6 | 3 | 0 | -3 | -6 | -8 | -11 | -14 | -17 | -20 | -23 | -25 | -28 | -31 | -34 | -37 | -40 | -42 | -45 | -48 | -51 | -54 | -57 | -60 | -62 | -65 | -68 | -71 | -74 | -77 | -79 | -82 | -85 | -88 | 50 | ||
| 52 | 26 | 23 | 20 | 17 | 14 | 11 | 8 | 6 | 3 | 0 | -3 | -6 | -9 | -12 | -14 | -17 | -20 | -23 | -26 | -29 | -32 | -34 | -37 | -40 | -43 | -46 | -49 | -51 | -54 | -57 | -60 | -63 | -66 | -69 | -71 | -74 | -77 | -80 | -83 | -86 | -89 | 52 | ||
| 54 | 25 | 22 | 20 | 17 | 14 | 11 | 8 | 5 | 2 | 0 | -3 | -6 | -9 | -12 | -15 | -18 | -20 | -23 | -26 | -29 | -32 | -35 | -38 | -41 | -43 | -46 | -49 | -52 | -55 | -58 | -61 | -63 | -66 | -69 | -72 | -75 | -78 | -81 | -83 | -86 | -89 | 54 | ||
| 56 | 25 | 22 | 19 | 16 | 14 | 11 | 8 | 5 | 2 | -1 | -4 | -6 | -9 | -12 | -15 | -18 | -21 | -24 | -27 | -29 | -32 | -35 | -38 | -41 | -44 | -47 | -50 | -52 | -55 | -58 | -61 | -64 | -67 | -70 | -73 | -75 | -78 | -81 | -84 | -87 | -90 | 56 | ||
| 58 | 25 | 22 | 19 | 16 | 13 | 10 | 8 | 5 | 2 | -1 | -4 | -7 | -10 | -13 | -15 | -18 | -21 | -24 | -27 | -30 | -33 | -36 | -38 | -41 | -44 | -47 | -50 | -53 | -56 | -59 | -62 | -64 | -67 | -70 | -73 | -76 | -79 | -82 | -85 | -87 | -90 | 58 | ||
| 60 | 25 | 22 | 19 | 16 | 13 | 10 | 7 | 4 | 2 | -1 | -4 | -7 | -10 | -13 | -16 | -19 | -22 | -24 | -27 | -30 | -33 | -36 | -39 | -42 | -45 | -48 | -50 | -53 | -56 | -59 | -62 | -65 | -68 | -71 | -74 | -76 | -79 | -82 | -85 | -88 | -91 | 60 | ||
| 40 | 38 | 36 | 34 | 32 | 30 | 28 | 26 | 24 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | 8 | 6 | 4 | 2 | 0 | -2 | -4 | -6 | -8 | -10 | -12 | -14 | -16 | -18 | -20 | -22 | -24 | -26 | -28 | -30 | -32 | -34 | -36 | -38 | -40 | ||||
| Temperature °F | ||||||||||||||||||||||||||||||||||||||||||||
| Color codes for Frostbite times | 30 minutes | 10 minutes | 5 minutes |
|---|
The wind chill is an attempt to quantify the combined effect of temperature and wind. It has a better basis than the heat index, but is still does not take into account all the variables such as sunlight, exertion levels, etc.
However, it does provide a simple way of alerting people about dangerous conditions.
Note that the frostbite times are associated with the colors and not with particular wind chill numbers.
The modern wind chill formula was derived from a study of skin temperature
of people in a chilled wind tunnel.
Here is the formula, where T=temperature (°F) and V=wind velocity (mph).
Wind Chill = 35.74 + 0.6215T - 35.75V0.16 + .4275TV0.16
Note to data geeks: I couldn't find a formula for the frostbite time anywhere on the web, but Ron Fontaine of SurvivalTopics.com dug into this question and got the details from Paul Stokols of NOAA. Read Ron's explanation of the wind chill formula.
The color levels shown in the above chart are interpolated from the NOAA chart.
Charts, Graphs, & Diagrams > Health Charts > Wind Chill
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