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Ozone is the primary cause of summer air pollution. It is formed when volatile organic compounds (VOCs) and nitrogen oxides (NOx) mix with sunlight and heat. Ozone is a mix of chemicals emitted mainly from vehicle tailpipes, diesel engines, and the smokestacks of coal-fired power plants.
Ozone, sometimes referred to as smog, is principally a summer time problem when temperatures are high and daylight hours are long, but it may have implications to wintertime particulate problems as well. It becomes a more acute problem on hot summer days and can lead to shortness of breath, chest pains, and lung inflammation.
In the State's most heavily populated areas, the best choice you can make during the summer months is to leave your vehicle parked for the day and look for other ways to get around.
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