Why is the air quality in Anshan poor?

Ozone pollution. The poor air quality is due to the over-standard rate of pollution factors. The high incidence of ozone pollution is from May to September every year, and ozone pollution has become an important factor affecting air quality in summer. Ozone, also known as peroxide, is a light blue gas with a special smell at room temperature, which plays an important role in protecting human beings and the environment in the stratosphere, but high concentration ozone in the troposphere, especially near the ground, will have a negative impact on human health.