• Delhi's air quality index reaches 'severe' levels post-Diwali, with widespread use of fireworks contributing significantly to pollution.
• 36 out of 38 monitoring stations reported 'red zone' pollution levels, with the AQI soaring to 442 in some areas.
• Authorities warn of health risks, especially for vulnerable populations, as air quality is projected to remain poor in the coming days.

Delhi is facing a severe air quality crisis in the aftermath of Diwali celebrations, where widespread fireworks have pushed the city's Air Quality Index (AQI) into dangerously high levels. On Tuesday, 36 out of 38 monitoring stations reported pollution levels in the 'red zone', with the AQI spiking to 442 according to Channel News Asia and Reuters.

The Supreme Court's relaxation on firecracker bans, allowing the use of 'green crackers', has been largely disregarded, leading to significant pollution levels. Reports indicated that the average hourly PM2.5 levels reached alarming figures, peaking at 675 micrograms/cubic metre during Diwali night, reflecting the effects of both fireworks and other preexisting pollutants, as noted by Indiatimes and Indiatimes.

On Tuesday morning, the capital appeared shrouded in a toxic haze, with reports of AQI levels averaging 451. Satellite cities like Noida and Gurgaon also recorded hazardous levels of 407 and 402, respectively, indicating that pollution had spread beyond Delhi, as outlined by Indiatimes and BBC.

The Commission for Air Quality Management (CAQM) has previously instituted Stage II of the Graded Response Action Plan, aimed at mitigating air quality issues, yet experts warn that substantial long-term strategies are needed to effectively address the recurrent pollution crises. The India Meteorological Department has further indicated that worsening weather conditions may trap pollutants, prolonging the situation until more severe action can be taken, according to Al Jazeera and Indiatimes.

Health authorities have raised alarms regarding the dangers posed to vulnerable groups, including children and the elderly, who are particularly at risk of respiratory and cardiovascular issues stemming from the high pollution levels. The city's residents are now advised to limit outdoor activities, use air purifiers, and wear masks when necessary, echoing advice from health experts and public health organizations reported by Indiatimes and Reuters.