Delhi's air quality has once again plummeted to alarming levels, with the Air Quality Index (AQI) slipping into the 'severe' category on Sunday, November 9, 2025. Several areas within the city have recorded AQI values exceeding 400, indicating hazardous air conditions.
According to the Central Pollution Control Board (CPCB) data, Anand Vihar registered an AQI of 412, Alipur reported 415, and Bawana recorded the highest level at 436. Other areas with 'severe' AQI readings include Chandni Chowk (409), RK Puram (422), Patparganj (425), and Sonia Vihar (415). An AQI between 301 and 400 is categorized as 'very poor', while an AQI between 401 and 500 is considered 'severe' and poses significant health risks to residents.
The deterioration in air quality follows a trend of worsening conditions over the past few days. On Saturday, November 8, Delhi's overall AQI was recorded at 355, placing it in the 'very poor' category. Friday, November 7, also saw 'very poor' air quality, with an AQI of 312. Thursday, November 6, had a 'poor' AQI of 271.
Several factors contribute to Delhi's persistent air pollution problem. These include vehicle emissions, industrial pollution, construction activities, and the burning of agricultural stubble in neighboring states like Haryana and Punjab. Delhi's geographical location also exacerbates the issue, as the city lies in a basin-like plain that traps pollutants, especially during the winter months. Cool temperatures and slow winds further prevent the dispersion of pollutants, leading to the formation of smog. The urban heat island effect, caused by heat emitted from roads, concrete, and vehicles, also contributes to the trapping of pollutants near the ground.
The Delhi government has implemented several measures to combat air pollution, including declaring the entire city an air pollution control area, closing coal-based power plants, promoting gas-based power plants, and increasing green cover. Additional measures include online monitoring and emission control systems in industrial facilities, strict collection and transportation of municipal solid waste, increased street sweeping, and intensified water sprinkling on roads. The government has also been urging citizens to avoid burning biomass, use approved fuels, maintain their vehicles, and prefer public transport and electric vehicles.
Despite the 'severe' air quality, the Graded Response Action Plan (GRAP) Stage 3 has not yet been enforced. According to the Delhi Pollution Control Committee (DPCC), the city's air quality this November has remained comparatively better than the same period last year, due to coordinated pollution control measures. However, authorities are closely monitoring pollution trends and will escalate measures as needed.
Residents are encouraged to report air pollution incidents using the Green Delhi App and the 311 App. Citizens are also advised to wear masks, especially N95 or P100 masks, to filter out harmful particles when the air is polluted.
