The AQHI categories and messages
| HEALTH RISK | AQHI CATEGORY | HEALTH MESSAGES | |
|---|---|---|---|
| AT-RISK POPULATION* | GENERAL POPULATION | ||
| Low | 1 to 3 | Enjoy your usual outdoor activities | Ideal air quality for outdoor activities |
| Moderate | 4 to 6 | Consider reducing or rescheduling strenuous outdoor activities if you are experiencing symptoms | No need to modify your usual outdoor activities unless you experience symptoms of coughing and throat irritation |
| High | 7 to 10 | Reduce or reschedule strenuous outdoor activities. Children and the elderly should also take it easy | Consider reducing or rescheduling strenuous outdoor activities if you experience symptoms of coughing and throat irritation |
| Very high | Above 10 | Avoid strenuous outdoor activities. Children and the elderly should avoid outdoor physical exertion | Reduce or reschedule strenuous outdoor activities, especially if you experience symptoms of coughing and throat irritation |
AQHI—Air Quality Health Index.
↵* People with heart or breathing problems are at greater risk. Follow your doctor’s usual advice about exercising and managing your condition.
Data from Environment Canada.51 This table is adapted from an official work published by the Government of Canada; this adaptation has not been produced in affiliation with or with the endorsement of the Government of Canada.