Air pollution in Delhi worsens to ‘severe’ category

Air quality is expected to improve on Thursday; people told to avoid outdoor physical activities

Updated - November 28, 2021 11:13 am IST

Published - November 12, 2019 09:36 am IST - New Delhi:

New Delhi: A view of the Raisina HIll enveloped in smog in New Delhi, Monday, Nov. 11, 2019.

New Delhi: A view of the Raisina HIll enveloped in smog in New Delhi, Monday, Nov. 11, 2019.

The air quality of Delhi worsened to “severe” category on Tuesday, with an Air Quality Index (AQI) of 413 at 8.30 a.m., according to the Central Pollution Control Board (CPCB). The air quality is expected to improve to “very poor” category on Thursday.

‘Severe’ air quality can cause respiratory problems to healthy people and serious health impact on people with lung or heart diseases, according to authorities.


The level of PM 2.5 — deadly respirable particles, which is a chief pollutant — was 4.7 times (283.9 ug/m3) the safe limit (60ug/m3) as per Indian standards in Delhi and NCR at 8 a.m., according to the CPCB. But the level of PM 2.5 is more than 11 times the safe limit (25 ug/m3) set by the World Health Organisation (WHO).

People are advised to avoid all outdoor physical activities, skip morning walks and close room windows. “Stop any activity if you experience any unusual coughing, chest discomfort, wheezing, breathing difficulty or fatigue and consult a doctor,” an advisory by government-run monitoring agency System of Air Quality and Weather Forecasting and Research (SAFAR) said.

The air quality has deteriorated because of low wind speed, cloudy conditions and an increase in contribution of stubble burning in neighbouring States, according to SAFAR.

Delhi’s AQI on Monday was 360 (very poor), slightly up from 321 (very poor) on Sunday, according to the 4 p.m. bulletin by the CPCB, which is the average of the past 24 hours. An AQI between 0-50 is considered “good” and 51-100 “satisfactory”.


0 / 0
Sign in to unlock member-only benefits!
  • Access 10 free stories every month
  • Save stories to read later
  • Access to comment on every story
  • Sign-up/manage your newsletter subscriptions with a single click
  • Get notified by email for early access to discounts & offers on our products
Sign in


Comments have to be in English, and in full sentences. They cannot be abusive or personal. Please abide by our community guidelines for posting your comments.

We have migrated to a new commenting platform. If you are already a registered user of The Hindu and logged in, you may continue to engage with our articles. If you do not have an account please register and login to post comments. Users can access their older comments by logging into their accounts on Vuukle.