Sydney, engulfed in smoke, has a ghastly air quality problem
10:45am PST - December 10th, 2019 anthony davis - MashableIconic Sydney, choked in bushfire smoke, is swamped in some of the most atrocious air on Earth. At certain times of day, it is literally the worst. On Monday night, some areas in Australia's most populated city had air pollution levels, known as the Air Quali…