New Delhi, Jan 12: The Centre's panel on Delhi-NCR's air quality on Sunday revoked Stage-III curbs under the Graded Response Action Plan (GRAP) amid a dip in air pollution levels due to favourable meteorological conditions, according to an official order.

Light rainfall in and around Delhi triggered by a Western Disturbance -- weather systems that originate in the Mediterranean region and bring winter rain and snow to northwest India -- significantly improved the city's air quality.

The national capital's air quality index (AQI) stood at 278 at 4 PM on Sunday, 72 points below the 350-mark threshold for the implementation of Stage-III curbs, which include a ban on non-essential construction work.

Another Western Disturbance is likely to affect northwest India around January 14–15.

GRAP Stage 3, which was brought back on Thursday, entails a ban on non-essential construction work. Classes up to grade V are required to shift to hybrid mode under Stage 3. Parents and students have the option to choose online education wherever available.

Under Stage 3, the use of BS-III petrol and BS-IV diesel cars (4-wheelers) is restricted in Delhi and nearby NCR districts. Persons with disabilities are exempt.

Stage 3 also bans non-essential diesel-operated medium goods vehicles with BS-IV or older standards in Delhi.

During winters, the Delhi-NCR region enforces restrictions under GRAP, which categorizes air quality into four stages – Stage I (Poor, AQI 201-300), Stage II (Very Poor, AQI 301-400), Stage III (Severe, AQI 401-450), and Stage IV (Severe Plus, AQI above 450).

Unfavourable meteorological conditions, combined with vehicle emissions, paddy-straw burning, firecrackers, and other local pollution sources, lead to hazardous air quality levels in Delhi-NCR during winters.

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The BJP-led NDA has decided to boycott the Erode East bypoll scheduled for February 5 and would focus on dethroning the ruling DMK in the hustings next year, the saffron party's state unit said on Sunday.

The BJP's announcement virtually makes the election a no-contest as the main opposition AIADMK and the DMDK have already announced boycotting the byelections necessitated by the death of Congress MLA EVKS Elangovan. The DMK has nominated VC Chandrakumar on behalf of its-led bloc, which also has the Congress in the alliance.

BJP TN chief K Annamalai said the upcoming elections were a “byelection for a byelection”, following the bypoll held here in 2022. He recalled there were accusations of the ruling DMK then "confining" people at designated places.

The NDA faced the DMK violating poll rules due to the "arrogance" of being the ruling party.

"The coming 2026 Assembly polls are one meant to remove the DMK (from the ruling saddle), and the NDA is moving towards that target and does not want to allow the DMK to confine people like cattle once again," he said in a statement.

"All leaders of the NDA who wish for people's welfare, after detailed consultation, have decided to boycott the Erode East bypoll. Our target is to remove the DMK in the 2026 elections and give the NDA's good governance to people," Annamalai said.

The state has been pushed to a "dark period" with no safety for various sections of society and the DMK government was an "anti-people" one where law and order has also failed, the former IPS officer alleged.

NDA constituents in the state include Pattali Makkal Katchi (PMK).

Incidentally, the AIADMK that was a part of the NDA in 2022 had fielded its nominee in that year's bypoll to Erode East seat but lost to Congress' Elangovan, who faced the elections following the death of his son and local MLA E Thirumahan Everaa.