In December 2020, in the north of Crimea, i.e. in Armiansk and Krasnoperekopsk, they reported the increase of the indices of the air pollution. That was informed by the so-called Crimean Meteorological Office.
Thus, according to the data, in Armiansk, the air pollution has been observed in five factors such as sulfurous acid anhydride, carbon monoxide, nitrogen dioxide, hydrogen fluoride, and formaldehyde. In Krasnoperekopsk, the pollution has been reported in three factors such as carbon monoxide, nitrogen dioxide, and chlorine hydride.