Air Quality Health Index
The Air Quality Health Index (AQHI) is for everyone. The AQHI provides a number from 1 to 10 to indicate the level of relative health risk associated with local air quality. The higher the AQHI number, the greater the health risk and need to take precautions. Occasionally, when the amount of air pollution is extremely high, such as during a forest fire smoke event, the AQHI may exceed 10.

AQHI Forecasts
The AQHI also forecasts health risks from air quality for tonight and tomorrow. Check the AQHI in your community before heading off to work or play, and use the forecasts to plan your activities, whether over the next hour or the next day.

AQHI Health Messages
Each level of health risk is associated with a pair of health messages for at risk and general populations. It suggests steps we can take to reduce our pollution exposure.

Health Risk Air Quality Health Index Health Messages
At Risk Population General Population
Low Risk 1 – 3 Enjoy your usual outdoor activities. Ideal air quality for outdoor activities.
Moderate Risk 4 – 6 Consider reducing or rescheduling strenuous activities outdoors if you are experiencing symptoms. No need to modify your usual outdoor activities unless you experience symptoms such as coughing and throat irritation.
High Risk 7 – 10 Reduce or reschedule strenuous activities outdoors. Children and the elderly should also take it easy. Consider reducing or rescheduling strenuous activities outdoors if you experience symptoms such as coughing and throat irritation.
Very High Risk Above 10 Avoid strenuous activities outdoors. Children and the elderly should also avoid outdoor physical exertion. Reduce or reschedule strenuous activities outdoors, especially if you experience symptoms such as coughing and throat irritation.

Source: AEP http://aep.alberta.ca/air/air-quality-health-index/default.aspx

Source: AQHI Web Portal: http://www.environment.alberta.ca/apps/aqhi/aqhi.aspx