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Tuesday
January 2021
2:19 PM IST
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England beats Sri Lanka by 7 wickets in 1st test        Fourth Test: Rain forces early stumps with India at 4-0 while chasing 328 to win        Three UK partners with TCS to accelerate 5G network rollout        3 Adani Group-owned domestic airports accredited in ACI health accreditation programme        N. Korea''s parliament rubber stamps new development plans        Kremlin critic Navalny detained after landing in Moscow        'Rooting hard for you': Will departure notes end with Trump?        Tandav controversy: FIR against director, Amazon India head of content        Smiles, sanitizers welcome students as schools reopen in Delhi        COVID-19: India records lowest fatalities in eight months        Proposed tractor rally on Jan 26: It's law & order matter, says SC on plea for injunction against it        PM flags off 8 trains to boost connectivity to Statue of Unity        Fire in luggage van of running train doused in time in Kerala        Kerala logs 5,005 new COVID-19 cases, 4,408 recoveries        Farmer unions say they will go ahead with tractor march in Delhi on Republic Day        Kremlin critic Navalny departs Berlin on Moscow-bound flight        Cargo ship sinks in the Black Sea; 3 dead, 6 rescued        4th Test: Australia 21/0 at stumps, lead India by 54 runs after Sundar, Thakur fightback        NorthEast end winless streak to bag crucial points against Jamshedpur        India take tea break at 62/2, replying to Australia's 369        
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National News
Rain, strong winds improve Delhi's air quality to 'moderate' category
 
New Delhi, Jan 4 (PTI) Delhi's air quality improved significantly to the "moderate" category on Monday morning owing to rain and strong winds.

A government forecasting agency said the air quality is likely to improve further to the "satisfactory" category.

The national capital's air quality index (AQI) was 148 at 10 am. The 24-hour average AQI was 354 on Sunday and 443 on Saturday.

An AQI between zero and 50 is considered "good", 51 and 100 "satisfactory", 101 and 200 "moderate", 201 and 300 "poor", 301 and 400 "very poor", and 401 and 500 "severe".

Officials at the India Meteorological Department (IMD) said intense rains lashed Delhi and winds gusting up to 30 kmph swept the city on Sunday under the influence of a strong Western Disturbance affecting northwest India, dispersing pollutants.

The Safdarjung Observatory recorded 39.9 mm rainfall between 8:30 am on Saturday to 2:30 pm on Sunday.

More rain is likely on Monday. The maximum wind speed will be around 30 kmph, the IMD said.

The central government's Air Quality Early Warning System for Delhi said the AQI is likely to remain "moderate" to "satisfactory" on Monday and Tuesday.

It said the city's ventilation index -- a product of mixing depth and average wind speed -- would be 5,000 m2/s on Monday and Tuesday.

Mixing depth is the vertical height at which pollutants are suspended in the air. It reduces on cold days with calm wind speed.

A ventilation index lower than 6,000 sqm/second, with the average wind speed less than 10 kmph, is unfavourable for the dispersal of pollutants.


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