What causes smog? Great Question! Most of us know it well. Smog comes from smoke+fog. This is a combination of smoke created by burning coal, factories, and human activities. But, coal burning has been much limited now. Then where from it comes? Smog in California is “photochemical air pollution”, caused by the burning of fuel in factories and power plants, along with vehicles.
There are other contributors too. Toxic substances such as gasoline and paint, release light-blocking chemicals into the atmosphere. This has led to creating a blanket of pollution comprised of several other pollutants. This has contributed to the destruction of the ozone layer and an increase in greenhouse gases which has been a major concern. It is contributing to more global warming and the melting of polar ice caps.
The Worst Smog-hit Cities in the US
the worst cities for smog are in California. Some cities like Los Angeles, Bakersfield, Fresno, and Sacramento are highly-hit and need immediate measures to stop smog, while other cities that are on the high-smog list include Birmingham, Alabama; Salt Lake City, Utah; Detroit, Michigan; and Chicago. Illinois; Cleveland, Ohio; Houston, Texas; and Dallas are another highly polluted cities. These all cities contribute to the highest smog in California.
Why Smog Check in California for Cars?
Car exhaust has two main components i.e. Hydrocarbons and Nitrogen Oxides. Hydrocarbons are produced from the gasoline, and nitrogen oxides are formed inside hot, internal combustion engines. These both are highest pollutants in California. They float into the sunny air of California and get baked into a new chemical -ozone, also known as smog. This has made the state hazardous.
Smog Check Measures in California
Though we can be self-sensitive about the environment as it will directly harm us. But, due to the lax attitude of the public, the state has made stringent smog check regulations in California. Though state cannot prohibit people from owning several cars, it can ban them from giving more smog in California.