18th from Hunan provincial meteorological observatory and the Environmental Protection Department's monitoring data show that due to "smog days" impact, cities including Changsha, Zhuzhou, Xiangtan, Yueyang's air quality has declined markedly, showing different degree of pollution. Yellow haze starting from Hunan provincial meteorological station emergency warning, alerting the public to the need to enhance defence effect of haze.

Haze that appeared frequently in recent days, has been brought to the Hunan cities inhabitants apparently troubled not only limited exercises outdoors, breathable even at home not long opened the window. In the smoggy days, some are alone in patients with respiratory disease. Hunan province, according to the analysis released by the Environmental Protection Department's air quality related data, such as Changsha, Zhuzhou, Xiangtan cities face serious air pollution situation, first time in the second half of the year.

Analysis of Hunan provincial meteorological observatory chief forecaster Yao Rong, improvement in air quality in the province is still some way off, 18-20, haze in the province are also expected to be developed until the 20th night in Western Hunan local heavy rain, scattered rains in other areas, provincial smog will get some relief.