Air quality in Tehran 17 December 1400 / Air quality index reached 121

According to the Moj news agency, according to the Tehran Air Quality Control Company, today’s air in Tehran with an average pollution index of 121 is in the range of “unhealthy for sensitive groups.” Also, with the increase of evening traffic until late today, Friday (January 7) and the lack of effective wind, the concentration of suspended particles will increase.

According to the forecasts made by the Tehran Air Quality Control Company, unhealthy and unhealthy conditions are expected for sensitive groups in most areas on Friday morning (December 6, 1400) with the continuation of stable and calm weather conditions and the accumulation of pollutants during the past hours.

The rule of atmospheric stability during the day will limit the spread of pollutants. With the increase of evening traffic until late Friday and the lack of wind, the effective concentration of suspended particles will increase, and consequently the establishment of an unhealthy situation for sensitive groups in most areas will not be unexpected.

It is further emphasized: with the relative increase of wind speed until Saturday morning (December 7, 1400), the concentration of pollutants will be reduced to some extent. With the beginning of car traffic on the first day of the week, the concentration of suspended particles will increase Traffic is predicted, a decrease in wind speed during the day will cause the accumulation of pollutants.

The continuation of these weather conditions until the last hours of Saturday, along with the increase in evening traffic, will lead to an increase in the concentration of suspended particles, and air quality in most areas will be in the unhealthy range for sensitive groups.