According to Tehran Air quality control company, the average air quality of the capital is now acceptable (April 5).
According to Isna, The capital’s air index was a pollutant in the last 7 hours, on average, 2 and the capital of the capital “less than 1.5 microns”. The index polluter is currently less than 2 and 2.5 microns, “particles less than 1 microns” and are in air quality.
Since the beginning of the year, Tehran’s air quality was clean and 5 days was acceptable for five days.
The air quality index (AQI) is divided into six main categories. This division of “clean” of the “clean” from zero, from 1 to 2 “Of the” 2 to 2 “from 1 to 2” more than 2 “of” more health “and 1 to 2” more than 1 “air quality.
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