Air qual­ity still ‘very poor’, Ex­perts say it will take a few more days for it to im­prove. City fared bet­ter than Delhi, Noida, Farid­abad and Ghazi­abad

Hindustan Times (Gurugram) - - Front Page - HT Cor­re­spon­dent ■ htre­porters@hin­dus­tan­times.com

The Cen­tral Pol­lu­tion Con­trol Board (CPCB) on Fri­day is­sued no­tices to au­thor­i­ties in NCR towns — Delhi, Gu­ru­gram, Ghazi­abad and Gau­tam Budh Na­gar — for al­leged “non-com­pli­ance” of the Supreme Court’s direc­tions re­gard­ing a ban on the sale and use of con­ven­tional fire­crack­ers.

CPCB of­fi­cials said Delhi Po­lice com­mis­sioner Amulya Pat­naik had been is­sued a no­tice di­rect­ing him to file a re­port within a week for “not restrict­ing” the burst­ing of fire­crack­ers.

De­spite the SC ban on sale and use of con­ven­tional fire­crack­ers, wide­spread vi­o­la­tion of the ban was re­ported on Di­wali night.

GU­RU­GRAM: Air qual­ity in the city re­mained ’very poor’ on Fri­day, climb­ing to 400 on the Air Qual­ity In­dex (AQI), up from 389 on Thurs­day.

The max­i­mum read­ing of par­tic­u­late mat­ter 2.5 (PM2.5), the pri­mary pol­lu­tant, dropped to 381ug/m3 from 622ug/m3 the pre­vi­ous day.

The av­er­age con­cen­tra­tion of PM2.5 through the course of the day also showed a de­cline, from 399ug/m3 on Thurs­day to 300ug/m3, ac­cord­ing to the Cen­tral Pol­lu­tion Con­trol Board (CPCB) data.

Kuldeep Singh, the Haryana State Pol­lu­tion Con­trol Board’s re­gional of­fi­cer in Gu­ru­gram, said that un­favourable me­te­o­ro­log­i­cal con­di­tions were caus­ing lo­cal air to “stag­nate” and that the pre­vail­ing wind speeds were un­able to fa­cil­i­tate ef­fec­tive dis­per­sal of air­borne par­ti­cles.

“Tem­per­a­ture and wind, the two fac­tors which af­fect air pol­lu­tion, are on the lower side to­day,” he said, adding that it would take a few more days be­fore the city re­cov­ers from the im­pact of fire­crack­ers.

The max­i­mum tem­per­a­ture

in Gu­ru­gram was recorded at 30.6 de­grees Cel­sius, ac­cord­ing to the In­dia Me­te­o­ro­log­i­cal De­part­ment, while the wind speed was lower than 1 kilo­me­tre per hour (kmph).

Since Thurs­day, Gu­ru­gram has also recorded a spike in the level of at­mo­spheric car­bon monox­ide, ben­zene, ni­tro­gen diox­ide and ozone.

SK Tyagi, an as­sis­tant sci­en­tist with the CPCB’s air qual­ity lab in Delhi, said that this could be at­trib­uted to the use of fire­crack­ers across the city, and this in­di­cates the for­ma­tion of se­condary aerosols and pres­ence of volatile or­ganic car­bons in the at­mos­phere.

While these con­tam­i­nants were not found to breach the safe limit set by the Na­tional Am­bi­ent Air Qual­ity Stan­dards, they have con­trib­uted to the rise in Fri­day’s AQI, Tyagi said.

How­ever, the city seems to be far­ing much bet­ter than its coun­ter­parts in the Na­tional Cap­i­tal Re­gion.

On Fri­day, for the sec­ond day in a row af­ter Di­wali, Gu­ru­gram recorded bet­ter air qual­ity than Delhi, Noida, Farid­abad and Ghazi­abad, all of which had ‘se­vere’ air, with AQI val­ues cross­ing the 400 mark.


■ Delhi­Gur­gaon Ex­press­way around 7.30am at Shankar Chowk. Vis­i­bil­ity re­mained low on Fri­day morn­ing.

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