Abstract: Based on the weather situation and the local meteorological elements and so on, the meteorological conditions leading to the regional air pollution in Quanzhou were analyzed. Wet and dry pollution characteristics in the coastal zone of Quanzhou were discussed in terms of dry and wet conditions, relative humidity and the non-rainy days and so on. The results indicate that regional air pollution is generated in the coast of Quanzhou under those main weather systems, such as the ground high pressure (the bottom, rear or ridge of high pressure), the ground inverted trough, low vortex front, warm zones before the front and so on. For the ground meteorological elements, temperature increases and air pressure decreases; the direction and speed of the daily sea and breeze transforms each other; it has fog and haze at night or in the morning. When the relative humidity reaches 70%-80%, it is easily lead to the regional air pollution.

Key words: font-family: "Times New Roman", mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, Weather situation')">mso-fareast-font-family: 宋体">Weather situation, Meteorological element, Relative humidity