The key facts

  • From 21:00 on October 15, the AQI index in Tashkent rose to a level unfavorable for sensitive groups; the peak occurred around 00:00 on October 16.
  • Overnight, the temperature dropped to 11.8 degrees, with wind of 0.7–1.5 m/s; due to the inversion, PM2.5 and PM10 particles accumulated in the surface layer.
  • During the day on October 16, an average AQI level is expected, with possible short-term deterioration in the evening; constant monitoring is underway.

Deterioration of air quality overnight on October 16

Overnight on October 16, air quality in Tashkent deteriorated under the influence of unfavorable meteorological conditions. According to available data, starting from 21:00 on October 15, the International Air Quality Index (AQI) readings rose to a level unfavorable for sensitive groups. The highest values were observed around 00:00 on October 16, and in some districts a short-term unfavorable level was recorded.

Meteorological conditions and accumulation of pollutants

Overnight, the air temperature dropped to 11.8 degrees, and the wind speed was about 0.7–1.5 m/s. Due to a strong temperature inversion, air exchange weakened, and fine PM2.5 and PM10 particles accumulated in the surface layer of the atmosphere.

Forecast for October 16 and monitoring

According to forecasts, during the day on October 16, air quality in Tashkent is expected to be mostly at an average level according to the AQI. Closer to the evening, in some districts it may briefly reach a level unfavorable for sensitive groups. According to the National Air Quality Index, readings are forecast to be mostly at the green level, and in some districts at the yellow level. Currently, atmospheric air quality is under constant monitoring by the Special Commission.