Heat Index Calculator
Calculate what the temperature "feels like" with humidity.
Heat Index (Feels Like)
0°F
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Heat Index (°C)
0°C
Increase
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NWS Heat Index Scale
Caution: 80-90°F — Fatigue possible
Extreme Caution: 90-103°F — Heat cramps/exhaustion
Danger: 103-124°F — Heat stroke likely
Extreme Danger: 125°F+ — Heat stroke imminent
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