Decrease in air temperature in Tehran

According to Moj News Agency, the sky of Tehran province will be clear to slightly cloudy during the next four days, sometimes with wind, and in the western and southern parts of the province until tomorrow (September 19) in the afternoon, sometimes strong winds and the possibility of dust will rise. Not expected.

According to the announcement Tehran Meteorological Department Today (September 17) Reduce air temperature It is expected in Tehran.

Predictions made by Tehran Air Quality Control Company indicate that this morning (September 17) with increasing morning traffic and no effective wind, air quality in some busy areas will be in unhealthy areas for sensitive groups.

The relatively calm and stable atmosphere during the day will limit the favorable conditions for the dispersion of pollutants. Also, with the presence of sufficient factors to produce ozone pollutants, increasing the concentration of this pollutant in some areas will reduce air quality in the afternoon.

Increased evening traffic until late Saturday will increase the concentration of particulate matter and the accumulation of pollutants, and the establishment of an unhealthy situation for sensitive groups in high-traffic areas will not be unexpected.

With the increase of wind speed until the morning of Sunday (September 18), the concentration of pollutants will decrease to some extent and the air quality in most areas will be within the acceptable range.

Gradual decrease in wind speed during the day will cause the accumulation of pollutants in high-traffic areas, in addition, in the afternoon, the production and increase in the concentration of ozone pollutants in some areas will lead to a decrease in air quality.

It is worth noting that with the continuation of these weather conditions until the last hours of Sunday, an increase in the concentration of suspended particles and as a result an unhealthy situation for sensitive groups in some of the busiest areas is predicted.

The polluter of the capital’s air index during the last 24 hours was “nitrogen dioxide” with an average of 78 and the air quality of the capital was in an acceptable condition. The index pollutant is currently “suspended particles less than 2.5 microns” with an average of 88 and air quality in the acceptable range.