Heat index

In the summer, humidity is the element that increases the feeling of embarrassment. RG Stedman (EE.UU.1979) developed the parameter windchill combined effect of heat and moisture from studies on human physiology and the heat transfer between the body, clothing and environment. When humidity is high, the wind chill value exceeds that of the air temperature. In this case the wind chill quantifies the difficulty which the body is to dissipate the heat produced by the internal metabolism and discomfort associated with excessive moisture. If the humidity is low, the wind chill is lower than the air temperature. In this case the parameter measures the increased sense of well-produced by a major cooling of the skin due to increased evaporation of sweat favored by low humidity.

TEMP. (º C)	0	5	10	15	20	25	30	35	40	45	50	55	60	65	70	75	80	85	90	95	100
20	16	16	17	17	17	18	18	19	19	19	19	19	20	20	20	21	21	21	21	21	21
21	18	18	18	19	19	19	19	19	20	20	20	20	21	21	21	22	22	22	22	22	23
22	19	19	19	20	20	20	20	20	21	21	21	21	22	22	22	22	23	23	23	23	24
23	20	20	20	20	21	21	22	22	22	23	23	23	23	24	24	24	24	24	24	25	25
24	21	21	22	22	22	22	23	23	23	24	24	24	24	25	25	25	25	26	26	26	26
25	22	23	23	23	24	24	24	24	24	24	25	25	25	26	26	26	27	27	27	28	28
26	24	24	24	24	25	25	25	26	26	26	26	27	27	27	27	28	28	29	29	29	30
27	25	25	25	25	26	26	26	27	27	27	27	28	28	29	29	30	30	31	31	31	33
28	26	26	26	26	27	27	27	28	28	28	29	29	29	30	31	32	32	33	34	34	36
29	26	26	27	27	27	28	29	29	29	29	30	30	31	33	33	34	35	35	37	38	40
30	27	27	28	28	28	28	29	29	30	30	31	32	33	34	35	36	37	39	40	41	45
31	28	28	29	29	29	29	30	31	31	31	33	34	35	36	37	39	40	41	45	45	50
32	29	29	29	29	30	31	31	33	33	34	35	35	37	39	40	42	44	45	51	51	55
33	29	29	30	30	31	33	33	34	34	35	36	38	39	42	43	45	49	49	53	54	55
34	30	30	31	31	32	34	34	35	36	37	38	41	42	44	47	48	50	52	55
35	31	32	32	32	33	35	35	37	37	40	40	44	45	47	51	52	55
36	32	33	33	34	35	36	37	39	39	42	43	46	49	50	54	55
37	32	33	34	35	36	38	38	41	41	44	46	49	51	55
38	33	34	35	36	37	39	40	43	44	47	49	51	55
39	34	35	36	37	38	41	41	44	46	50	50	55
40	35	36	37	39	40	43	43	47	49	53	55
41	35	36	38	40	41	44	45	49	50	55
42	36	37	39	41	42	45	47	50	52	55
43	37	38	40	42	44	47	49	53	55
44	38	39	41	44	45	49	52	55
45	38	40	42	45	47	50	54	55
46	39	41	43	45	49	51	55
47	40	42	44	47	51	54	55
48	41	43	45	49	53	55
49	42	45	47	50	54	55
50	42	45	48	50	55

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