Delhi's Air Quality Plunges to Severe Post-Diwali, Smog Raises Health Alarms

Post-Diwali, Delhi's air quality deteriorates significantly, with AQI reaching 'Severe' levels in many areas.

A woman wearing a face mask stands on a hazy street with an AQI sign showing "370 Very Poor".
Delhi's air quality has significantly worsened after Diwali, with pollution levels reaching 'Severe' in many areas.
Key Points

Delhi's air quality has turned 'Severe' after Diwali due to firecracker emissions, vehicle exhaust, construction dust, and crop burning, exacerbated by low wind speeds.

  • Delhi's AQI reached 370 at 9 AM on Monday, categorised as 'Very Poor'.
  • Several neighbourhoods recorded AQI readings above 400, classified as 'Severe'.
  • Firecracker emissions, vehicle exhaust, construction dust, and crop burning contributed to the pollution.
  • Low wind speeds and unfavourable weather conditions hindered pollutant dispersal.
  • High PM2.5 levels worsen respiratory and heart conditions, especially for vulnerable groups.
  • Authorities have activated Stage III restrictions under the Graded Response Action Plan (GRAP).

Delhi woke up to a thick blanket of smog on Monday, with air pollution rising sharply after Diwali celebrations. The city's Air Quality Index (AQI) reached 370 at 9 AM, placing it in the Very Poor category, while several neighbourhoods recorded readings above 400, classified as Severe.

Firecracker emissions added to the pollution caused by vehicle exhaust, construction dust and crop-residue burning in neighbouring states. Low wind speeds and unfavourable weather conditions have also slowed the dispersal of pollutants.

Health Risks and Precautions

High levels of fine particulate matter, particularly PM2.5, can worsen asthma and other respiratory conditions and increase risks to heart health. Children, older people and those with existing respiratory or cardiac problems are particularly vulnerable.

Residents are advised to limit prolonged outdoor activities, avoid strenuous exercise outdoors and follow official health advisories. Authorities have also activated Stage III restrictions under the Graded Response Action Plan (GRAP).

Published: Monday, 9 November 2026 | 2:10 PM IST

Share this story

WhatsAppFacebookXTelegram