New Delhi, Oct. 22 -- : The national capital's air quality index (AQI) again plunged to the 'poor' category as the wind direction changed to northwesterly, resulting in increasing of smoke and dust particles in the air.

At 11 am on Tuesday, the overall air quality index (AQI) was docking at 232, after fluctuating between moderate and very poor category for over a week.

The people residing in Delhi are also complaining of the spike in respiratory problems and allergies.

"This kind of air is poisonous for the people who are asthmatics. We must all come together to combat this menace. I fell breathless each day because of the smog," a local, Rajesh told ANI.

"The traffic has increased in Delhi. The tourist transport has also increased in t...