The GRAP III curbs imposed in Delhi-NCR as air quality level reaches "severe" zone ahead of Diwali. The Delhi government plans to induce artificial rain if air pollution levels increase post Diwali and Chhath Puja, according to sources. The air quality index (AQI) in Delhi currently stands at 367, which falls in the 'very poor' category, with some areas recording 'severe' levels of pollution.