Delhi's air quality that at present is in the severe zone for several places including Mundka at 322, and Pusa at 358 at 1 pm today. Punjabi Bagh recorded the highest pollution level in the national capital at 434.
"Clear sky in south, southeast and western part will improve ventilation coefficient and will improve situation in Delhi and NCR", Saha said.
The PM2.5 level (presence of particles in the air with a diameter of less than 2.5 micrometres) was recorded at 179.
Out of 48 monitored station across NCR (including Delhi), only four had "moderate to poor" air quality while 23 stations have "severe or severe-plus" air quality and 21 were "very-poor".
Prashant Saxena, head pulmonologist at the Max Smart Super Speciality Hospital in New Delhi, said the number of patients coming to him with breathing problems, asthma, chest and related ailments has increased 15-20 per cent in the past two weeks.
Pannu said that Delhi should find the "real cause" instead of blaming it on Punjab's farmers.
The CPCB-led task force recommended the public to avoid strenuous outdoor activities and minimise the use of private vehicles to reduce exposure to toxic air.
Coal and Biomass based Industries (excluding thermal and Waste to Energy Plants) to remain closed in Delhi NCR from November 4 10 and intensification of efforts by transport department to check polluting vehicles and control traffic congestion in Delhi NCR during November 1 - 10 were other measures.
The PM2.5, also called "fine particulates", can be a matter of more serious health concern than PM10.
"We are reviewing the air-quality status on a daily basis and weather conditions in November are not going to be similar to what we have present", CPCB head said, adding the department would appreciate if people use "Sameer", a mobile app to report environment violations such as garbage dumping and open burning.
The measures recommended by the task force are only preventive steps and not to create panic as the air pollution in Delhi is governed by meteorological conditions, he said.
The most recent air pollution data from the World Health Organization released in March gave India the dubious distinction of having the world's 10 most polluted cities. It also advised people to wear masks as a precaution.