|
Air Quality Index levels of Health Concern
|
Numerical
Value |
Meaning
|
 |
0-50 | Air quality is considered satisfactory, and air pollution poses little or no risk. |
 |
51-100 | Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. |
 |
101-150 | Members of sensitive groups may experience health effects. The general public is not likely to be affected. |
 |
151-200 | Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects. |
 |
201-300 | Health alert: everyone may experience more serious health effects. |
 |
> 300 | Health warnings of emergency conditions. The entire population is more likely to be affected. |