The buildings were shrouded in heavy smog in Shanghai on the morning of Jan 10, 2015 when the city's air quality index rose to 240, "heavily polluted". Shanghai Meteorological Bureau issued a yellow haze alert at 10:50 a.m. on Jan 10. (Photo: eastday.com)

The city's air was still "heavily polluted" with the AQI of 234 at 12 p.m., Jan 11. The patients with respiratory diseases should avoid going out.

1月10日（周六）早晨，上海空气质量指数升至240，为重度污染。从东方明珠塔眺望浦江两岸，高楼湮没在雾霾中只见轮廓。上海中心气象台10日10时50分发布霾黄色预警信号。

11日（周日）中午12时，上海空气质量指数为234，仍为重度污染。呼吸道疾病患者应避免外出。

Editor: Wang Jiaye

Source: english.eastday.com