Study on connection of Holiday Climate Index (HCI) and its components and components ratings with public health (on Example of Tbilisi - mortality by cardiovascular deseases and Kakheti Region of Georgia - ambulance calls, hospitalization, total mortality are presented). It is shown that, in general, all indicators adequately correspond to the degree of bioclimatic comfort of the living environment for people. In particular, the relationship between HCI and mortality in Tbilisi has the form of

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... second-degree polynomial, and in Kakheti - a third-degree polynomial. At the same time, with an increase in the degree of bioclimatic comfort to the category "Very good", there is a tendency for a decrease in mortality. With the transition to the "Excellent" category, there is a slight increase in mortality. A similar result for some components of the HCI and the ratings of these components was obtained. It is proposed to make adjustments in determining the degree of comfort of bioclimatic index scales for the population, taking into account local social and climatic conditions.