Agency for hydrometeorology
The Committee of Environmental Protection under the
Government of the Republic of Tajikistan
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Environmental review

Environmental review

Atmospheric air pollution

On March 27, 2024, the level of atmospheric pollution in the cities of the republic changed slightly compared to the previous day. There were no cases of high or extremely high air pollution (HAP and EHAP).

Concentrations of monitored ingredients

Dushanbe
In the air basin of Dushanbe, there was an increase in the average daily concentration of nitrogen oxide (NO) from 0.45 to 0.5; carbon monoxide (CO) from 0.13 to 0.18; particulate matter 2.5 micrometers (PM-2.5) from 0.26 to 0.4 of MPCc. There was a decrease in the average daily concentration of formaldehyde (CH2O) from 0.33 to 0.23; sulfur dioxide (SO2) from 0.4 to 0.3; hydrogen fluoride (HF) from 0.14 to 0; phenol (C6H6O) from 0.01 to 0 of MPCc, and the total nitrogen dioxide and sulfur dioxide (NO2+SO2) remained at the previous day's level of 0.39. The average daily concentration of particulate matter 10 micrometers (PM-10) remained at 0.7 of MPCc.
Khujand
In the air basin of Khujand, there was an increase in the average daily concentration of sulfur dioxide (SO2) from 0.4 to 0.5 of MPCc. There was a decrease in the average daily concentration of nitrogen dioxide (NO2) from 0.75 to 0.5 of MPCc and the total nitrogen dioxide and sulfur dioxide (NO2+SO2) from 0.35 to 0.28. The average daily concentration of suspended particles (dust) remained at the previous day's level of 0 of MPCc.
Guliston
In the air basin of Guliston, there was a decrease in the average daily concentration of nitrogen dioxide (NO2) from 0.75 to 0.5 of MPCc and the total nitrogen dioxide and sulfur dioxide (NO2+SO2) from 0.39 to 0.27. The average daily concentration of suspended particles (dust) remained at the previous day's level of 0 of MPCc; sulfur dioxide (SO2) remained at 0.4 of MPCc.
Bokhtar
In the air basin of Bokhtar, there was an increase in the average daily concentration of nitrogen dioxide (NO2) from 0.75 to 1.25 of MPCc and the total nitrogen dioxide and sulfur dioxide (NO2+SO2) from 0.43 to 0.66. There was a decrease in the average daily concentration of sulfur dioxide (SO2) from 0.38 to 0.36 of MPCc.
Tursunzade
There is no information available regarding the air basin of Tursunzade city.
Note
The degree of air pollution is assessed by comparing the concentration of pollutants (mg/m3) with MPCs. MPC (Maximum Permissible Concentration) - the concentration of a pollutant that does not have a direct or indirect adverse effect on the present or future generation, does not reduce human performance, and does not worsen their well-being and sanitary living conditions throughout their life. MPC values ​​are given in mg of substance per 1 m3 of air (mg/m3). MPCsr.c. (Maximum Permissible Daily Average Concentration) - the concentration of a pollutant that, with daily exposure over a long period of time, does not cause any pathological changes or diseases in the human body. Concentrations of pollutants in the atmospheric air of inhabited areas should not exceed the MPC. High Pollution (HP) - the concentration of one or more substances exceeds the MPC by 10 times or more. Extremely High Pollution (EHP) - the concentration of one or more substances exceeds the MPC by 50 times or more.