The average air quality index (AQI) in Delhi early Tuesday was recorded to be 492 (as of 7 am). The AQI in Alipur, Anand Vihar, Bawana, Narela, Pusa and Sonia Vihar, meanwhile, touched 500, which is the maximum index (as per the Central Pollution Control Board).

According to the Central Pollution Control Board (CPCB), the national capital recorded an Air Quality Index (AQI) at 488 as of 8 am, placing it in the 'severe plus' category.

The AQI in Delhi-NCR is in the ‘severe plus’ category. AQI between 0-50 is considered “good”, 51-100 is “satisfactory”, 101-200 is “moderate”, 201-300 is “poor”, 301-400 is “very poor”, 401-500 is “severe” and above 500 is a “severe plus”.

Delhi's air quality hits alarming levels as AQI touches 500 in several areas. Dense smog disrupts train services, delays classes at major universities, and poses severe health risks. Experts at COP29 highlight pollution sources and call for urgent action as particulate levels soar beyond 1,

Delhi's air quality remained severely polluted, reaching alarming levels of 494 AQI, prompting school closures and emergency measures. The Supreme Court intervened, directing strict implementation of anti-pollution measures as toxic smog engulfed the region,