How is the air quality in Shenzhen?

The air quality in Shenzhen is relatively good in China. On June 9th, the Ministry of Environmental Protection released the air quality status of 74 cities in March and the first quarter of 20 13. These 74 cities are the first cities in China to carry out PM2.5 monitoring. The results show that in 74 cities in March, the proportion of days reaching the standard was 54.4%, and the proportion of days exceeding the standard was 45.6%. According to the comprehensive index of urban air quality, air pollution in Tangshan, Shijiazhuang, Xi, Chengdu, Xingtai, Baoding, Xining, Handan, Langfang and Taiyuan is serious, and the deterioration of air quality in some cities this month is related to the impact of sandstorm weather; Haikou, Zhoushan, Lhasa, Fuzhou, Huizhou, Zhuhai, Lishui, Shenzhen, Xiamen and Zhangjiakou have good air quality. According to the relevant person in charge of the Ministry of Environmental Protection, from/kloc-0 to March, the overall proportion of days reaching the standard in 74 cities was 44.4%, and the proportion of days exceeding the standard was 55.6%. The main pollutants are PM2.5 and PM 10, in which the average over-standard rate of PM2.5 is 49. 1% and that of PM 10 is 33.6%. According to the comprehensive index of urban air quality, air pollution in some cities such as Shijiazhuang, Xingtai, Baoding, Handan, Tangshan, Jinan, Xi, Hengshui, Langfang and Urumqi is serious. Haikou, Lhasa, Zhoushan, Fuzhou, Huizhou, Xiamen, Shenzhen, Zhuhai, Jiangmen and Lishui have good air quality.