What should I do if the haze weather continues? What is the harm of haze weather?

At present, more than 30,000 sewage units in Beijing have implemented emission reduction measures. Beijing Environmental Monitoring Center predicts that the air quality index of Tongzhou, Miyun, Daxing, Mentougou and Fangshan will reach extremely heavy pollution in the next three days. Not just Beijing! According to the monitoring of the Central Meteorological Observatory, in the past week, smog weather with continuous low visibility appeared in most parts of central and eastern China, which affected public health, traffic and power grid safety. In fact, it is not a new phenomenon this year that the smog weather continues and the air quality declines. In recent years, smog has appeared in many places every autumn and winter, especially after winter. On the surface, the formation of smog has its meteorological factors. From a deeper perspective, the intensification of pollution emissions is the root cause of the growing smog in a large area. What is the harm of haze weather? With the deterioration of air quality, the phenomenon of haze weather increases and the harm increases. Recently, many areas in China have incorporated the smog weather phenomenon into the fog as an early warning and forecast of disastrous weather. Collectively referred to as "haze weather". In fact, fog and haze are completely different to some extent. For example, when fog appears, the air is humid; When smog occurs, the air is relatively dry and the relative humidity of the air is usually below 60%. The reason is that a large number of extremely fine dust particles, smoke particles and salt particles float in the air evenly, so that the air with effective horizontal visibility less than 10KM is mixed together. The symbol is "∞". The diurnal variation of haze is generally not obvious. When the air mass changes little and is stable, it lasts for a long time, sometimes exceeding 10 days. Due to weather phenomena such as haze, light fog, sandstorm, sand blowing, floating dust and smoke, the effective horizontal visibility is less than 10KM due to a large number of extremely fine dust particles or smoke particles floating in the air. Sometimes it is difficult for meteorological professionals to tell the difference. It is necessary to comprehensively analyze and judge the weather background, sky conditions, air humidity, color and smell, satellite monitoring and other factors to draw a correct conclusion. The weather phenomena of fog and haze can sometimes be converted to each other. Smog is harmful to the human body after being inhaled into the human respiratory tract, and it can be fatal in serious cases.