This statistic shows the number of days with an air quality level above Grade II of the Chinese ambient air quality standard in large cities in China in 2019. According to that measurement, the city of Tianjin had 219 days with good air quality in 2019.
Days with good air quality in major Chinese cities in 2019
(in days)
Note: According to the source, good air quality refers to air quality equal to or above Grade II of the Chinese ambient air quality standard GB 3095 - 1996.
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National Bureau of Statistics of China. (December 15, 2020). Days with good air quality in major Chinese cities in 2019 (in days) [Graph]. In Statista. Retrieved November 21, 2024, from https://www.statista.com/statistics/300950/china-days-with-good-air-quality-by-city/
National Bureau of Statistics of China. "Days with good air quality in major Chinese cities in 2019 (in days)." Chart. December 15, 2020. Statista. Accessed November 21, 2024. https://www.statista.com/statistics/300950/china-days-with-good-air-quality-by-city/
National Bureau of Statistics of China. (2020). Days with good air quality in major Chinese cities in 2019 (in days). Statista. Statista Inc.. Accessed: November 21, 2024. https://www.statista.com/statistics/300950/china-days-with-good-air-quality-by-city/
National Bureau of Statistics of China. "Days with Good Air Quality in Major Chinese Cities in 2019 (in Days)." Statista, Statista Inc., 15 Dec 2020, https://www.statista.com/statistics/300950/china-days-with-good-air-quality-by-city/
National Bureau of Statistics of China, Days with good air quality in major Chinese cities in 2019 (in days) Statista, https://www.statista.com/statistics/300950/china-days-with-good-air-quality-by-city/ (last visited November 21, 2024)
Days with good air quality in major Chinese cities in 2019 (in days) [Graph], National Bureau of Statistics of China, December 15, 2020. [Online]. Available: https://www.statista.com/statistics/300950/china-days-with-good-air-quality-by-city/
