Delhi's Air Quality Plunges to 'Severe'; AQI Crosses 400 Mark

• Delhi's air quality slipped into the 'severe' category with AQI exceeding 400; Noida recorded the worst at 426.
• The 24-hour average AQI on Tuesday was 412, a sharp deterioration from 373 the previous day.
• Five Delhi stations, including Nehru Nagar and Mundka, registered 'severe-plus' AQI levels above 450.
• Vehicular emissions are the largest contributor (14.4%) to pollution, followed by industries (7.2%) and construction (2%).
• GRAP-IV restrictions are in force; residents advised to limit outdoor exposure due to health risks.

Why It Matters: Delhi's air quality is 'severe' with AQI over 400, prompting health warnings and GRAP-IV enforcement.