Continuation of relative increase in air temperature in Tehran

According to the Wave news agency, according to the announcement of the General Administration Meteorology Tehran province, gradual trend Relative increase in temperature It is forecasted until tomorrow (September 4), and due to atmospheric stability conditions, a relative increase in the concentration of some air pollutants, especially ozone, is expected in some hours of the day. Not far from expectation.

Predictions made by Tehran Air Quality Control Company indicate that this morning (September 30) in high-traffic areas, air quality will be in the unhealthy range for sensitive groups due to increased morning traffic, lack of effective wind and accumulation. Pollutants are in the past hours.

Reducing wind speed during the day limits the dispersion of pollutants. In addition, with the presence of sufficient factors to produce “ozone” in some areas, there is a possibility of increasing the concentration of this pollutant in the afternoon and reducing air quality. Continued atmospheric stability and increased vehicle traffic until late will increase the concentration of particulate matter, resulting in an unhealthy situation for vulnerable groups in high-traffic areas, although effective winds in the final hours will scatter pollutants and improve air quality. Will have.

Tomorrow morning (September 4), the increase in morning traffic and the lack of effective winds will increase the concentration of suspended particles, and in some busy areas, unfavorable air quality will prevail. Continuation of these weather conditions during the day to some extent prevents the dispersal of pollutants. There is also the possibility of increasing the concentration of ozone pollutants and reducing air quality in some areas.

Relatively calm weather until late tomorrow (September 9) will cause the accumulation of pollutants and consequently establish an unhealthy situation for sensitive groups in some areas, although with a relative increase in wind speed in the last hours, the concentration of pollutants will decrease to some extent.

The polluter of the capital’s air index during the last 24 hours was “ozone” with an average of 106, and the air quality of the capital was in an unhealthy condition for sensitive groups. The index pollutant is currently “suspended particles less than 2.5 microns” with an average of 98 and air quality in the acceptable range.