The criteria of the hygienic estimation of the comfort stay of passengers and employees in the premises of air terminals are offered. It is shown that the on comfort stay at the airport are most in-fluenced by the acoustic situation, the parameters of the microclimate (thermal comfort), lighting quality and air quality of the premises of the airport terminal.
Aim. To study the influence of factors internal environment of airports and physical factors on the comfort of passengers and employees in the premises of air terminals.
Research methods. Sanitary-hygienic, analytical.

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