| Air color | Concern levels | Classes | Index values | Air quality description |
| Green | Good | 1 | 0 - 50 | Satisfactory air quality. Air pollution here, pose little or no risk. |
| Yellow color | Fair/Moderate | 2 | 51 - 100 | Acceptable air quality. This category may pose risk for some people, especially those who are usually prone to air pollution. |
| Orange color | This group is concerned with unhealthy health issues for some sensitive people. | 3 | 101 - 150 | Pollutant levels here, members of people in this category are affected due to the sensitive health effects experience by the general public health. |
| Red color | Concern levels for people is not healthy. | 4 | 151 - 200 | Some members of people in this group where the pollutants indicate red color, the general public may experience health effect that some sensitive member may experience very serious health effects. |
| Purple color | People in this category are very unhealthy. | 5 | 201 - 300 | Here, everyone experience the risk of health effects alert. |
| Maroon color | Hazardous | 6 | 301 an above | Everyone here, are likely to be affected due to health emergency warning condition alert. |