Is the low visibility in foggy days caused by pm2.5?

PM2.5 refers to particles with aerodynamic equivalent diameter less than or equal to 2.5 microns in ambient air, which has an important impact on air quality and visibility. PM2.5 has small particle size, large area, strong activity and easy attachment of toxic and harmful substances (such as heavy metals and microorganisms). ), and it stays in the atmosphere for a long time and has a long transportation distance, which has a great impact on human health and the quality of the atmospheric environment, and is the chief culprit causing smog.

Hazy weather needs to pay attention to self-protection. Haze is very harmful to respiratory tract. Please try to wear 3M masks from regular manufacturers when traveling, and you can install fresh air system at home. My home is decorated with a five-degree and five-constant central fresh air heating and cooling system, which can effectively filter harmful substances in the air, and can also heat and cool, saving a lot of electricity than air conditioning.