Delhi-NCR pollution: The Delhi Directorate of Education (DoE) has instructed all schools to implement hybrid classes for students up to Class 9 and Class 11. This decision comes after the implementation of stage four restrictions under the Graded Response Action Plan (GRAP) due to worsening air quality in the city. The India Meteorological Department and the Indian Institute of Tropical Meteorology predicted that AQI may breach the 400 mark soon. As a result, the Commission for Air Quality