Air quality across major Indian cities deteriorated over the weekend, with Delhi emerging as the most polluted metro ahead of Diwali . According to data from the Central Pollution Control Board (CPCB) and AQI.in, the national capital’s Air Quality Index (AQI) hovered around 295 on Sunday, slipping into the “poor” category — and reached “severe” levels in several neighbourhoods, raising health concerns for residents.

An AQI between 201 and 300 is classified as “poor,” 301-400 as “very poor,” and anything above 400 as “severe.” At these levels, prolonged exposure can cause breathing difficulties and pose risks to individuals with respiratory and cardiac conditions.

Delhi’s Air Quality Plunges to ‘Severe’ in Several Areas

Parts of Delhi witnessed hazardous air quality just a day befo

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