The size of particles is directly linked to their potential for causing health problems. Small particles less than 10 micrometers in diameter pose the greatest problems, because they can get deep into your lungs, and some may even get into your bloodstream
• Premature death
• Aggravated asthma
• Acute respiratory symptoms
• Chronic bronchitis
• Decreased lung function (shortness of breath).
• People with heart or lung diseases, children, and older adults are the most likely to be affected by particle pollution exposure.