| ex Values | | Air Quality
(Color Description) | | Health Cautionary Statement |
| Over 300 | | Hazardous
Deep Purple | | No activity outside - remain indoors. "Emergency Episode." |
| 201-300 | | Unhealthy Air Quality
Red | | All outdoor activities will stop. Indoor activities may continue in a closed environment. |
| 151-200 | | Unhealthy Air Quality
Red | | All students and adults should be cautious and curtail outdoor activities and avoid any prolonged exertion. Students and adults with history of respiratory disease such as asthma/heart disease, will participate only in activities that can be conducted indoors. |
| 101-150 | | Unhealthy for
Sensitive Groups
Orange | | Students and adults with respiratory diseases, such as asthma and heart disease, should not participate in any activity that would cause high levels of exertion. All other students and adults should limit outdoor activities. |
| 51-100 | | Moderate
Light Yellow | | Students and adults with history of extremely sensitive respiratory diseases, such as asthma, should consider limiting prolonged outdoor exertion. |
| 0-50 | | Good
Green | | None |