Los Angeles County has approximately 527 miles of freeway.
L.A. consistently ranks highest in OZONE and PARTICULATE POLLUTION. Geographical positioning, climate, sprawling freeways and industry all contributed in creating 69 UNHEALTHFUL SMOG DAYS in 2010.
OZONE: Increasingly severe symptoms and impaired breathing likely in active children and adults and people with respiratory disease, such as asthma; increasing likelihood of respiratory effects in general population.
Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion. CO: Significant aggravation of cardiovascular symptoms, such as chest pain, in people with cardiovascular disease. People with cardiovascular disease, such as angina, should avoid exertion and sources of carbon monoxide, such as heavy traffic. PM: Significant aggravation of heart or lung disease and premature mortality in persons with cardiopulmonary disease and the elderly; significant increase in respiratory effects in general population. People with heart or lung disease, older adults, and children should avoid all physical activity outdoors. Everyone else should avoid prolonged or heavy exertion.
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