Delhi's air quality remains in the 'very poor' category with an overall Air Quality Index (AQI) of 372, according to the Central Pollution Control Board (CPCB). Several areas in the national capital are experiencing 'severe' air quality, posing hazardous conditions for residents.

Areas with Severe Air Quality

As of Friday morning, neighborhoods including RK Puram, Nehru Nagar, Ashok Vihar, Jahangirpuri, Rohini, and Vivek Vihar have recorded AQI levels exceeding 400. Wazirpur was particularly affected, with an AQI of 476. Other areas in the 'severe' category include Anand Vihar, Punjabi Bagh, Mundka, Burari Crossing and Bawana. In total, 21 locations in Delhi fell into the 'severe' category.

Weather Conditions

The weather in Delhi remains cool with slight fog. The India Meteorological Department (IMD) reported a minimum temperature of 11.4°C, which is nearly a degree below the seasonal average, and a maximum temperature of 28.2°C, marginally above the seasonal average. Moderate fog is expected to continue. Low wind speeds and falling temperatures are contributing to the trapping of pollutants, exacerbating the poor air quality.

Contributing Factors

Delhi's air pollution is a complex issue arising from a combination of geographical, meteorological, and human-caused factors.

• Geographical Challenges: Delhi's basin-like geography, bordered by the Aravalli hills, restricts airflow, trapping pollutants. Temperature inversion, where cooler air is trapped beneath warmer air, further worsens pollution.
• Human-Caused Factors: Vehicular emissions, construction activities, industrial emissions, and the burning of waste contribute significantly to Delhi's air pollution. Stubble burning in Punjab and Haryana adds to the problem despite existing regulations.
• Major Pollutants: Key pollutants driving Delhi's AQI are PM2.5, PM10, and nitrogen dioxide (NO2). These particles, originating from vehicles, industries, dust, and seasonal crop burning, have a significant impact on respiratory health.

Health Impact and Precautions

The current air quality poses serious health risks, especially for vulnerable populations. Long-term exposure to such pollution levels can reduce life expectancy and contribute to respiratory and cardiovascular problems. Authorities advise residents to take necessary precautions to minimize exposure.

Graded Response Action Plan (GRAP)

Stage 3 measures of the Graded Response Action Plan (GRAP) have been in effect in the National Capital Region (NCR) since November 11, after Delhi's AQI deteriorated significantly.

Forecast

The Ministry of Earth Sciences' Air Quality Early Warning System predicts that Delhi's air quality is likely to remain in the 'very poor' to 'severe' category in the coming days.