The residents of Iranian capital had some relief as air quality improved slightly in May compared with the corresponding month of last year, data released by Tehran Air Quality Control Company show.
Charts published on TAQCC’s website, Airnow.tehran.ir show that in May, Tehran’s residents breathed less polluted air.
Clean blue skies were seen for two days recently with the air quality index showing "good" condition.
The index categorizes conditions dictated by a measure of polluting matters into good (0-50), moderate (51-100), unhealthy for sensitive groups (101-150), unhealthy (151-200), very unhealthy (201-300) and hazardous (301-500).
June 01, 2019 19:17
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Tehran Air Quality Improves Slightly in May
Official data indicate people in Tehran are breathing more clean air these days, as the number of days with suffocating air pollution has declined
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