The invention relates to computing systems for predicting the condition of a person depending on environmental parameters, and more particularly to a method and system for evaluating the effect of weather, geomagnetic background and the air on the condition of a person's body. The method involves the input of personal data, including at least gender and age, by a computer device user (2)； the determination or specification of a geolocation by said computer device user (2)； the transmission of the user data, containing the personal data and the geolocation data, to a processing unit (4)； the requesting of environmental forecast data from a weather server (5) by the processing unit (4), said data including forecast data about the weather, the geo-magnetic background and the air condition corresponding to the geolocation； the transmission of the forecast data to the processing unit (4) by the weather server (5)； the transmission of the user and forecast data to an encoder (8) and the generation of a single hash code, containing the user and forecast data； the transmission of the hash code to a decoder (9) and the correlation of said code with a database (10) of dependencies of the functioning of human body systems on weather, geomagnetic background and air condition parame-ters； and the transmission of the correlated data to a display means (11) and the display of information about the effect of environmental parameters on the functioning of human body systems. The technical result is an increase in the objectivity of forecast data, an increase in the operating speed of the system, a simplification of the structure of the said system, and an increase in the potential thereof as a result of the multi-parameter consideration of different parameters.
