Lahore [Pakistan], November 2 (ANI): Pakistan’s Lahore witnessed a dangerously high air quality index (AQI) reading of 1,067 on Saturday morning, retaining the top city list for the hazardous air quality in the world, ARY News reported. Smog in Lahore is causing serious health problems for residents, as they reported to have breathing difficulties, coughing and burning eyes, ARY News stated. AQI as high as 151-200 is considered unhealthy, while an AQI rating between 201 to 300 is more harmful and AQI over 300 has been extremely hazardous. Lahore had the worst air quality of 1,067 at 9:30 am (l…