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Report on the quality of air in 47 major Chinese cities (12:00 April 11 to 12:00 April 12, Beijing Time), released by the China Environmental Monitoring Center:

City	Major Pollutant	Air Quality Level
Beijing	particulate matter	II
Tianjin	particulate matter	II
Shijiazhuang	particulate matter	II
Qinhuangdao	particulate matter	II
Taiyuan	particulate matter	II
Hohhot	--------	I
Shenyang	particulate matter	II
Dalian	particulate matter	II
Changchun	particulate matter	II
Harbin	particulate matter	II
Shanghai	--------	I
Nanjing	--------	I
Suzhou	particulate matter	II
Nantong	--------	I
Lianyungang	--------	I
Hangzhou	--------	I
Ningbo	--------	I
Wenzhou	particulate matter	II
Hefei	--------	I
Fuzhou	particulate matter	II
Xiamen	particulate matter	II
Nanchang	--------	I
Jinan	particulate matter	III1
Qingdao	particulate matter	II
Yantai	particulate matter	II
Zhengzhou	particulate matter	II
Wuhan	--------	I
Changsha	--------	I
Guangzhou	--------	I
Shenzhen	--------	I
Zhuhai	--------	I
Shantou	particulate matter	II
Zhanjiang	--------	I
Nanning	particulate matter	II
Guilin	particulate matter	II
Beihai	--------	I
Haikou	--------	I
Chongqing	particulate matter	II
Chengdu	particulate matter	II
Guiyang	particulate matter	II
Kunming	particulate matter	II
Lhasa	particulate matter	II
Xi'an	particulate matter	II
Lanzhou	particulate matter	III1
Xining	particulate matter	III2
Yinchuan	particulate matter	II
Urumqi	sulfur dioxide	II

The center classifies air quality in China's urban areas into five levels: level I or excellent (pollution reading: not exceeding 50), level II or fairly good (pollution reading: 51 to 100), level III or slightly polluted (pollution reading: 101 to 200), level IV or poor (pollution reading: 201 to 300), and level V or hazardous (pollution reading: over 301).

The 47 cities monitored by the center include the four municipalities of Beijing, Tianjin, Shanghai and Chongqing, provincial (or autonomous regional) capitals, and major cities in economically developed coastal areas, and tourist attractions.

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