The air quality in Shijiazhuang is fresh and pleasant, which is very good.

Shijiazhuang, referred to as "Stone" for short, formerly known as Shimen, is one of the important central cities in Beijing-Tianjin-Hebei region of China approved by the State Council, the capital of Hebei Province? [1]? . As of 2119, the city has 8 districts, 11 counties and 3 county-level cities under its jurisdiction, with a total area of 14,464 square kilometers, a built-up area of 496 square kilometers, a permanent population of 11,131,211, an urban population of 7,115,511 and an urbanization rate of 64.41%.

Air quality reflects the degree of air pollution, which is judged according to the concentration of pollutants in the air. Air pollution is a complex phenomenon, and the concentration of air pollutants is affected by many factors at a specific time and place. The emission of man-made pollutants from stationary and mobile pollution sources is one of the most important factors affecting air quality, including the exhaust of vehicles, ships and planes, industrial pollution, residents' living and heating, garbage incineration and so on. Urban development density, topography and meteorology are also important factors affecting air quality.