According to Fars News Agency’s community group, according to the announcement of the Tehran Air Quality Control Company, the average pollutant index of “suspended particles less than 2.5 microns” is 78 and is in acceptable conditions.

Also, the pollutant index of the capital’s air during the last 24 hours was “suspended particles less than 2.5 microns” with an average of 92, and the air quality of the capital was in acceptable conditions.

The air quality in Tehran was unhealthy for sensitive groups from 23:00 last day until 5:00 am today, but it became acceptable again from 6:00 pm when it reached 99. This situation has continued until now.

Air quality (AQI) is divided into five main categories, based on which a number from 0 to 50 is defined as clean air, from 51 to 100 air is acceptable, healthy or average, and from 101 to 150 air is unhealthy for It is a sensitive group. 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.

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