The Wind Chill Chart
| Air Temperature (°C) | |||||||||||||||||||||
| W I N D S P E E D km / h |
Calm | 4 | 2 | -1 | -4 | -7 | -9 | -12 | -15 | -18 | -21 | -23 | -26 | -29 | -32 | -34 | -37 | -40 | -43 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 2 | -1 | -4 | -7 | -11 | -14 | -17 | -21 | -24 | -27 | -30 | -33 | -37 | -40 | -43 | -47 | -49 | -53 | |||
| 16 | 1 | -3 | -6 | -9 | -13 | -16 | -20 | -23 | -27 | -30 | -33 | -37 | -41 | -44 | -47 | -51 | -54 | -58 | |||
| 24 | 0 | -4 | -7 | -11 | -14 | -18 | -22 | -25 | -28 | -32 | -36 | -39 | -43 | -46 | -50 | -53 | -57 | -61 | |||
| 32 | -1 | -4 | -8 | -12 | -15 | -19 | -23 | -26 | -30 | -34 | -37 | -41 | -44 | -48 | -52 | -56 | -59 | -63 | |||
| 40 | -1 | -5 | -9 | -13 | -16 | -20 | -24 | -27 | -31 | -35 | -38 | -42 | -46 | -50 | -53 | -57 | -61 | -64 | |||
| 48 | -2 | -6 | -9 | -13 | -17 | -21 | -24 | -28 | -32 | -36 | -39 | -43 | -47 | -51 | -55 | -58 | -62 | -66 | |||
| 56 | -2 | -6 | -10 | -14 | -18 | -22 | -26 | -29 | -33 | -37 | -41 | -44 | -48 | -52 | -56 | -60 | -63 | -67 | |||
| 64 | -3 | -7 | -11 | -14 | -18 | -22 | -26 | -30 | -34 | -38 | -42 | -46 | -49 | -53 | -57 | -61 | -64 | -68 | |||
| 72 | -3 | -7 | -11 | -15 | -19 | -23 | -27 | -31 | -34 | -38 | -42 | -46 | -50 | -54 | -58 | -62 | -66 | -69 | |||
| 80 | -3 | -7 | -11 | -16 | -19 | -23 | -27 | -31 | -35 | -39 | -43 | -47 | -51 | -55 | -59 | -63 | -67 | -71 | |||
| 89 | -4 | -8 | -12 | -15 | -19 | -24 | -28 | -32 | -36 | -39 | -43 | -48 | -52 | -56 | -59 | -63 | -67 | -72 | |||
| 97 | -4 | -8 | -12 | -16 | -20 | -24 | -28 | -32 | -36 | -40 | -44 | -48 | -52 | -56 | -60 | -64 | -68 | -72 | |||
What is important about the wind chill besides feeling colder than the actual air temperature? The lower the wind chill temperature, the greater you are at risk for developing frost bite and/or hypothermia.
Frostbite occurs when your body tissue freezes. The most susceptible parts of the body are fingers, toes, ear lobes, and the tip of the nose. Hypothermia occurs when body core temperature, normally around 98.6°F (37°C) falls below 95°F (35°C). The following table shows how fast frostbite can occur at various wind chill temperatures.
| Wind Chill | Cold Threat |
| -6°C to 4°C | COLD. Unpleasant. |
| -17°C to -7°C | VERY COLD. Very unpleasant. |
| -28°C to -18°C | BITTER COLD. Frostbite possible. Exposed skin can freeze within 5 minutes. |
| -56°C to -29°C | EXTREMELY COLD. Frostbite likely. Exposed skin can freeze within 1 minute. Outdoor activity becomes dangerous. |
| -57°C and lower | FRIGIDLY COLD. Exposed skin can freeze in 30 seconds. |
Outer garments should be tightly woven, water repellent, and hooded. Wear a hat, because half of your body heat can be lost from your head. Cover your mouth to protect your lungs from extreme cold. Mittens, snug at the wrist, are better than gloves. Try to stay dry and out of the wind.