| Daily AQI Color | Levels of Concern | Values of Index | Description of Air Quality |
|---|---|---|---|
| GREEN | Good | 0 to 50 | Air quality is satisfactory, and air pollution poses little or no risk. |
| YELLOW | Moderate | 51 to 100 | Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. |
| ORANGE | Unhealthy for Sensitive Groups | 101 to 150 | Members of sensitive groups may experience health effects. The general public is less likely to be affected. |
| RED | Unhealthy | 151 to 200 | Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. |
| PURPLE | Very Unhealthy | 201 to 300 | Health alert: The risk of health effects is increased for everyone. |
| MAROON | Hazardous | 301 and higher | Health warning of emergency conditions: everyone is more likely to be affected. |
| Values of Index | School in Session? | Brief Activities (<15 min) | Physical Education (< 1 hr) | Athletic Practice and Training (2-4 hrs) | Scheduled Sporting Events |
|---|---|---|---|---|---|
| Good 0 to 50 | YES | No Restrictions | |||
| Moderate 51 to 100 | YES | Ensure sensitive individuals are medically managing their condition* | |||
Unhealthy for Sensitive Groups 101 to 150 | YES | Sensitive individuals should exercise indoors or avoid vigorous outdoor activities.* | Sensitive individuals should avoid vigorous outdoor activities.* | Reduce vigorous exercise to 30 min per hour of practice time with increased rest breaks and substitutions. Ensure that sensitive individuals are medically managing their condition.* | Increase rest breaks and substitutions per CIF guidelines for extreme heat.*** Ensure that sensitive individuals are medically managing their condition.* |
Unhealthy 151 to 200 | YES | Avoid vigorous outdoor activities. Sensitive individuals should remain indoors.* | Increase rest breaks and substitutions per CIF guidelines for extreme heat. Ensure that sensitive individuals are medically managing their condition.* | ||
Very Unhealthy 201 to 300 | YES (<275) NO (>275) Campuses closed at District's discretion | No outdoor activity. No indoor exercise or vigorous activity. | Event must be rescheduled or relocated. | ||
Hazardous 301 and higher | NO | No outdoor activity. No indoor exercise or vigorous activity. | |||