Due to change in wind direction and low speed, pollution in the capital remains in very poor category. In such a situation, Friday morning started with mist and light fog. At the same time, a light layer of smog was also seen in the sky. Due to this, visibility also remained low. During this time people were seen wearing masks. Also, respiratory patients had to face problems. During this period the Air Quality Index (AQI) was recorded at 349. This is a very poor category of air. An increase of 42 points was recorded compared to Thursday.