Trial runs begin at Ban­dra to fix Mumbai’s air- qual­ity in­dex

Hindustan Times ST (Mumbai) - HT Navi Mumbai Live - - FRONT PAGE - Badri Chat­ter­jee­ter­[email protected]­dus­tan­

MUMBAI: Tri­als to fix the air qual­ity in­dex (AQI) — a pol­lu­tion mea­sur­ing in­di­ca­tor used world­wide — for the city have started. The AQI has been cre­ated by the Ma­ha­rash­tra Pol­lu­tion Con­trol Board (MPCB) for the first time in the city.

The AQI uses 24-hour av­er­ages of pol­lu­tants hav­ing the most ad­verse ef­fect on hu­man health such as sul­phur diox­ide (SO2), ni­tro­gen ox­ide ( NO x), car­bon monox­ide (CO), ozone (O3), and par­tic­u­late mat­ter (PM 2.5 and PM 10), which can be in­haled into the lungs.

Third ma­jor pol­lu­tants, gives a cer­tain weigh­tage to the con­stituents and ar­rives at a fig­ure. The in­dex has six cat­e­gories of pol­lu­tion lev­els — from ‘good’ to ‘se­vere’ — and the six bands are colour-coded to vis­ually ex­press the level of sever­ity.

On April 28, the num­ber was 79, which means ‘good’ or hav­ing

The cre­ation of an AQI is part of the Cen­tre’s plan to cre­ate a na­tional in­dex, the first phase of which was launched by the Prime Min­is­ter on April 6. Mumbai is part of the sec­ond phase that will also in­clude Pune and So­la­pur. The MPCB col­lects data from its Ban­dra mon­i­tor­ing sta­tion to cre­ate the in­dex.

VM Mot g hare, joint direc­tor, air pol­lu­tion con­trol, MPCB said, “Af­ter a re­cent meet­ing with mem­bers of the Cen­tral Pol­lu­tion Con­trol Board (CPCB) in Delhi, we will host a daily air qual­ity in­dex on our web­site from places like Ban­dra [Mumbai], Chan­dra­pur, So­la­pur and Karve Road [Pune] on a trial ba­sis.”

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