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AIR QUALITY GUIDE FOR PARTICLE POLLUTION
Particle Pollution, or PM 2.5, is a year round pollutant for Jefferson, Shelby and a small portion of Walker counties. Meteorologists use the color-coded chart below to forecast air quality, which are broadcast through the local media. Called the AQI (air quality guide), the chart indicates the particle pollution levels and the health impacts of each.
Air Quality Guide for Paticle Pollution |
Air Quality Index |
Health Impact |
Good |
0-50 |
None
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Moderate |
51-100 |
Unusually sensitive people should consider reducing prolonged or heavy exertion.
|
Unhealthy for Sensitive Groups |
101-150 |
Air Quality Alert: People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.
Unhealthy for Sensitive Groups.
|
Unhealthy |
151-200 |
Air Quality Alert: People with heart or lung disease, older adults, and children should avoid prolonged or heavy exertion. Everyone else should reduce prolonged or heavy exertion
|
Very Unhealthy |
201-300 |
Air Quality Alert: 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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