Rains lashed the national capital on Sunday morning bringing down the temperature by several notches while the air quality was recorded 'very poor'. The major pollutants PM 2.5 were recorded at 373 and PM 10 at 298 (very poor category) in the RK Puram area. In the Jawaharlal Nehru Stadium area, the Air Quality Index (AQI) PM 2.5 was at 375 and PM 10 at 301.