TV Weather - Expanded AQI Fact Sheet
- Starting October 1, 2003, daily forecasts for particle pollution will
be available year-round on the newly expanded Air Quality Index (AQI). Until
now, the AQI has been used to forecast only ground-level ozone during the
- Particles can affect your health year-round. Particle pollution refers
to microscopic particles in the air that can get deep into the lungs -- potentially
causing serious health problems.
- People with heart or lung disease (including asthma), older adults and
children are particularly sensitive to the harmful effects of particle pollution.
The sensitive groups for ozone include people with lung disease (including
asthma), children and adults who are active outdoors.
- Sources of particles include smokestack emissions, vehicle exhaust, and
fires. Particles are produced any time fuels such as coal, oil, diesel or
wood are burned. They come from everything from power plants to woodstoves
and motor vehicles (e.g., cars, trucks, buses and marine engines). Particles
are even produced by construction equipment, agricultural burning and forest
- When particle pollution forecasts become available October 1, 2003, the
expanded Air Quality Index will be an even better resource for millions of
Americans to manage their health.
- People who are sensitive to particle pollution can reduce their health
risks by cutting back on strenuous activities or scheduling strenuous activities
when air quality is better.
- Meteorologists will still be able to use the AQI and the familiar five-color
system to forecast localized air quality year-round with an emphasis on ozone
and particles. For example, a meteorologist might say, "It's a code orange
day -- that means the air quality today is unhealthy for sensitive groups.
The primary pollutant is particles. People with heart or lung disease (including
asthma), children and older adults should cut back their strenuous activities
- To learn more about air quality and how people can protect their health,
This page was last updated on
Tuesday, June 04, 2013