The effective temperature of the 'comfo zone' is-
Comfo zones: In deg C of corrected effective temperature Pleasant and cool 20 Comfoable and cool 20-25 Comfoable 25- 27 (77-80F) Hot and uncomfoable 27-28 Extremely hot 28+ Intolerably hot 30+. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 792
69-76 o F
77-80 oF
83-85 oF
86-90 oF
Environment and health