A decrease in atmospheric air quality is forecasted for the city of Tashkent from October 29 to October 30. According to information received from the Special Commission that monitors the state of the air basin continuously, in the evening hours, the indicators according to the international Air Quality Index (AQI) will initially be classified as 'Harmful to sensitive groups.'
After 21:00, an increase in the concentration of fine PM particles is expected. During the night and morning hours, the air quality according to the international AQI scale will drop to the 'Unhealthy for health' level, which is equivalent to the 'orange' danger level according to the national index.
Experts attribute the accumulation of harmful compounds to several meteorological factors: nighttime temperature drop, weak wind movement, and the presence of pronounced temperature inversion. These conditions hinder normal air exchange in the lower layers of the atmosphere.
Under these conditions, the process of dispersing both local emissions and pollutants arriving from neighboring regions slows down, contributing to their accumulation in the ground layer. The situation is exacerbated by the prolonged stagnation of air masses over the urban area.
However, during the daytime, as the air warms up and vertical air exchange recovers, the temperature inversion will begin to weaken, which should lead to a gradual improvement in the ecological situation.
