Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
Some air pollutants are poisonous. Inhaling them can increase the chance you'll have health problems. People with heart or lung disease, older adults and children are at greater risk from air pollution. Air pollution isn't just outside - the air inside buildings can also be polluted and affect your health.
Environmental Protection Agency
- Air Pollution (National Institute of Environmental Health Sciences)
- Air Quality Index (AQI) -- A Guide to Air Quality and Your Health (Environmental Protection Agency, Office of Air Quality Planning and Standards)
- Hazardous Air Pollutants (Environmental Protection Agency)
- Healthy Air Outdoors (American Lung Association)
- Air Pollution Exposure in Early Pregnancy Linked to Miscarriage, NIH Study Suggests (11/16/2017, National Institute of Child Health and Human Development)
- Bad Air Day (National Institutes of Health)
- Disparities in the Impact of Air Pollution (American Lung Association)
- Local Air Quality Conditions and Forecasts (Environmental Protection Agency, Office of Air Quality Planning and Standards)
- Protect Yourself: Respirators (Occupational Safety and Health Administration) - PDF
- Risk Assessment for Toxic Air Pollutants: A Citizen's Guide (Environmental Protection Agency)
- Tox Town (National Library of Medicine) Also in Spanish
- TOXNET: Toxicology Data Network (National Library of Medicine) - Databases on toxicology, hazardous chemicals, and related areas
- Acid Rain (Environmental Protection Agency)
- Particle Pollution (Centers for Disease Control and Prevention)
- Particulate Matter (PM) Pollution (Environmental Protection Agency, Office of Air Quality Planning and Standards)
- Transportation, Air Pollution, and Climate Change (Environmental Protection Agency)
- Volcanic Gas (U.S. Geological Survey)
- ClinicalTrials.gov: Air Pollution (National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Nanomaterials Versus Ambient Ultrafine Particles: An Opportunity to Exchange Toxicology...
- Article: Psychosocial and demographic predictors of adherence and non-adherence to health...
- Article: The impact of prenatal exposure to air pollution on childhood...
- Air Pollution -- see more articles
- Particulate Matter (Environmental Health Student Portal) (National Library of Medicine)