The article presents the results of assessing the degree of negative impact of the enterprise LLC Collective fishery "Tihiy okean" on the atmospheric air. The enterprise releases 33 pollutants into the atmosphere. Substances of the first hazard class include: dimethylamine, benzo/a/pyrene. Substances of the second hazard class include: manganese and its compounds, sulfuric acid, hydrogen sulfide, gaseous fluorides, poorly soluble fluorides, phenol, formaldehyde. All other substances belong to 3–4 hazard classes, or are not assigned to any. The work takes into account 23 sources of air pollution at the enterprise, operating at the time of the inventory of them: including 9 — organized, fourteen — unorganized. In order to analyze the compliance of indicators with hygienic standards for the quality of the surface layer of air, according to the content of 23 pollutants in it, was carried out using a unified program — UPRZA Ecolog ver. 3.0. assessment of the magnitude of surface concentrations of these impurities at the border of the sanitary protection zone of the enterprise. The results of the calculations indicate the observance of hygienic standards of atmospheric air quality, taking into account background atmospheric pollution for 23 substances emitted by the sources of the enterprise LLC "Cf" Tihiy okean. Consequently, emission limits are proposed at the level of existing emissions. The development of air protection measures is not required, but it is recommended to use the most environmentally friendly equipment currently available. The purpose of the work is to assess the degree of negative impact of the enterprise LLC Collective fishery "Tihiy okean" on the atmospheric air, determination of the level of air pollution by the enterprise.