Delhi weather: As cold wave grips national capital, AQI remains 'severe'

Delhi's air quality plunges to a 'severe' AQI of 409, dominated by hazardous PM2.5 pollution. Stage IV of GRAP remains in effect, restricting construction and truck entry. Light rain is forecasted, offering potential relief but also a risk of increased humidity exacerbating pollution. Temperatures are expected between 8°C and 20°C.