The air quality in ten cities such as Haikou,Sanya and Zhaoqing attained Grade I,while the air quality in 114 of them was at Grade III,accounting for 33.4%.

• 其中海口、三亚、肇庆等10个城市空气质量达到一级标准。114个城市空气质量为三级，占统计城市数的33.；4%25。