The Delhi government on Thursday set up a six-member special task force to ensure strict implementation of measures outlined in the Centre's air pollution control plan GRAP in the capital, Environment Minister Gopal Rai said.

Delhi's special secretary (environment) will head the STF whose members include senior officials from the departments of transport, traffic, revenue, Municipal Corporation of Delhi (MCD) and Public Works Department (PWD).

The STF will coordinate with all the departments involved in the enforcement of pollution control measures and submit a report to the government daily, Rai told reporters.

Earlier in the day, Rai held a meeting with departments on the effective implementation of anti-air pollution measures.

Rai had previously reprimanded the departments concerned for their negligence in executing the air pollution control plan and urged them to establish a monitoring mechanism for overseeing the teams responsible for enforcing anti-air pollution measures.

Strict restrictions, including a ban on construction work and the entry of polluting trucks into the capital, under the final stage (Stage IV) of the Centre's air pollution control plan called the Graded Response Action Plan (GRAP) had kicked in on November 5 after air quality in the capital dropped to "severe plus" (AQI above 450) levels.

Barring a few days around Diwali, Delhi's air quality has fluctuated between the "very poor" and "severe" categories due to unfavourable meteorological conditions hindering the dispersion of pollutants.

On Thursday, the capital's Air Quality Index stood at 412 at 3 pm. Its 24-hour average AQI, recorded at 4 pm every day, stood at 401 on Wednesday. It was 397 on Tuesday, 358 on Monday, 218 on Sunday, 220 on Saturday, 279 on Friday and 437 on Thursday.

Recent findings from a joint project by the Delhi government and IIT-Kanpur revealed that vehicular emissions accounted for about 38 per cent of the national capital's air pollution on Wednesday. This is projected to rise to 40 per cent on Thursday.

Calm winds and low temperatures are allowing accumulation of pollutants and relief is unlikely over the next few days, an official at the India Meteorological Department (IMD) said.

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