According to the data of the Environmental Protection Organization, out of eight cities in the country, Ahvas and Isfahan experienced air suitable for groups sensitive to air pollution and 6 cities.
According to the informants, According to information provided by the Environmental Protection Organization’s National Center for Air Change and Climate on air quality in eight major cities in the country, the average air pollutant index in Ahvas reached less than 2.5 microns today (September 9). 141 In unsanitary conditions for sensitive groups.
Isfahan residents also inhaled air with a particulate matter pollutant index of less than 2.5 microns, and their number reached 119.
The residents of six cities of Karaj, Arak, Mashhad, Tehran, Tabriz and Shiraz experienced acceptable weather and their numbers reached 93, 91, 84, 82, 80 and 75. The main pollutant in these other six tunnels is suspended particles less than 2.5 microns.
According to informants, the air quality index (AQI) is divided into five main categories. Depending on this category, 0 to 50 clean air, 51 to 100 acceptable (healthy) or average air, 101 to 150 unhealthy air for sensitive groups, 151 to 200 unhealthy air for all groups, and 201 to 300 “unhealthy” air, 301 to 500 “dangerous” unhealthy conditions and air quality conditions.
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