air quality index
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Tehran’s AQI in Fiscal 2022-23
EghtesadOnline: According to data released by Tehran Air Quality Control Company, Tehran’s air quality was “good” on only four days in the fiscal 2022-23.
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Tehran Schools Close Over Choking Smog
EghtesadOnline: Air Quality Index in Tehran on Tuesday hovered around 130, above the threshold of "unhealthy for sensitive groups", which has pushed authorities to take a further drastic measure…
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Tehran Air Quality Improves in April
EghtesadOnline: In April, Tehran’s residents experienced some relief after air quality index (AQI) improved in comparison with the same month of last year, according to data from Tehran Air Quality…