How to identify the hazards caused by haze weather?

There are many sources of smog weather, such as automobile exhaust, industrial emissions, building dust, garbage incineration, and even volcanic eruptions. The main hazards of smog can be summarized into two types: one is the harm to human body, and the other is the harm to traffic.

The identification method of haze weather: generally, the visibility deterioration caused by atmospheric turbidity and blurred line of sight when the relative humidity is less than 80% is caused by haze; Atmospheric turbidity when relative humidity is greater than 90% and visibility deterioration caused by blurred vision caused by fog; When the relative humidity is between 80% and 90%, the decrease of visibility caused by fuzzy vision is caused by the mixture of fog and haze, but its main component is haze. The thickness of smog is relatively large, which can reach 1 ~ 3 km.