Breathing unhealthy air for sensitive groups in Tehran
According to the report of Arya Heritage and quoted by Isna, according to the forecasts made by the air quality control company of Tehran, this morning (January 7) due to the stable atmosphere and the accumulation of pollutants during the past hours, along with the increase in morning traffic, the air quality in most High traffic areas will be in the unhealthy range for sensitive groups. The absence of effective wind during the day prevents the dispersion of pollutants.
With the relative increase in wind speed, the concentration of pollutants will decrease to some extent by the end of Wednesday, although the increase in evening traffic will increase the concentration of suspended particles and create an unhealthy situation for sensitive groups in most high-traffic areas.
Due to the lack of effective wind until tomorrow morning (January 8), at the same time as the traffic of cars increases, the concentration of pollutants and the continuation of unhealthy conditions for sensitive groups in most high-traffic areas will not be far from expected. The continuation of stable atmospheric conditions during the day limits the dispersion of pollutants.
With the rule of stable weather and no effective wind until the end of Thursday, along with the increase in evening traffic, the concentration of pollutants will increase, and the establishment of an unhealthy and unhealthy situation for sensitive groups is predicted in most areas.
According to the announcement of the Tehran Air Quality Control Company, the pollutant index of “suspended particles less than 2.5 microns” is now at the number 109, which means unhealthy conditions for sensitive groups. Also, the pollutant index of the capital’s air during the past 24 hours is “suspended particles less than 2.5 micron” with an average of 113 and the air quality of the capital was in unhealthy conditions for sensitive groups.
Therefore, according to the precautionary instructions issued by the Tehran Air Quality Control Company, people suffering from heart or lung disease, the elderly and children are among the sensitive groups and should reduce long or heavy outdoor activities. Prolonged activity is any outdoor activity that people do intermittently for several hours and causes breathing to be somewhat harder than normal. Working in the garden, vigorous outdoor activities such as running, etc. are among these activities.
It should be mentioned that the air quality (AQI) is divided into five main categories, based on which it is defined from 0 to 50 in the range of clean air, from 51 to 100 the air is acceptable, healthy or average, and from 101 to 150 Unhealthy air for sensitive groups. In the range of 151 to 200, the air is in the unhealthy range for all groups, and in the range of 201 to 300, the air is in the very unhealthy range. According to this classification, air quality conditions in the range of 301 to 500 are dangerous.
end of message/