Heat index (Fahrenheit)

Relative humidity (%)	Temperature (°F)
Relative humidity (%)	80	82	84	86	88	90	92	94	96	98	100	102	104	106	108	110
40	80	81	83	85	88	91	94	97	101	105	109	114	119	124	130	136
45	80	82	84	87	89	93	96	100	104	109	114	119	124	130	137
50	81	83	85	88	91	95	99	103	108	113	118	124	131	137
55	81	84	86	89	93	97	101	106	112	117	124	130	137
60	82	84	88	91	95	100	105	110	116	123	129	137
65	82	85	89	93	98	103	108	114	121	128	136
70	83	86	90	95	100	105	112	119	126	134
75	84	88	92	97	103	109	116	124	132
80	84	89	94	100	106	113	121	129
85	85	90	96	102	110	117	126	135
90	86	91	98	105	113	122	131
95	86	93	100	108	117	127
100	87	95	103	112	121	132

Likelihood of heat disorders with prolonged exposure or strenuous activity
	Caution				Extreme caution				Danger				Extreme danger

Data from: Heat Forecast Tools. National Weather Service. Available at: https://www.weather.gov/safety/heat-index (Accessed on August 25, 2021).

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