<p>The article explores the possibility of using the thermohygrometric coefficient of air aridity to assess bioclimatic conditions, including thermal comfort. According to the results, thermohygrometric coefficient has a good response to changes in temperature and humidity and has pronounced annual and daily trends. Based on the statistical processing of the data series of air temperature and dew point at the Tashkent Observatory meteorological station in the period 2000-2018, features of the temporal distribution of thermal comfort conditions were revealed. The results can be used in organizing tourism and sports events, in creating favorable working conditions in various sectors of the economy, as well as in the field of urban planning and healthcare and in the public utility system.</p>