AQHI:








Ontario's Air Quality Health Index

Air Quality Health Index AQHI Observations for Wednesday, July 1, 2015, 12:00 pm

The AQHI is a health protection tool that is designed to help you make decisions to protect your health by limiting short-term exposure to air pollution and adjusting your activity levels during increased levels of air pollution. It is based on the following pollutants in our air: Ozone (O3), Fine Particulate Matter (PM2.5), Nitrogen Dioxide (NO2).

Air Quality Health Index Maps:

Table:

Note: The Air Quality Health Index on this web page are based on automatically polled data and have not undergone final verification.

Note: N/A (Not Available) denotes invalid or missing data.

Air Quality Health Index (AQHI) Categories

Air Quality Health Index Categories, Values and Associated Colours
1
2
3
4
5
6
7
8
9
10
+
Low Risk
(1 - 3)
Moderate Risk
(4 - 6)
High Risk
(7 - 10)
Very High Risk
 

Air Quality Health Index Categories and Health Messages

The table below provides the health messages for each category of the Air Quality Health Index for the "at risk" population and the general population.
Health Risk Air Quality Health Index Health Messages
At Risk Population* General Population
Low 1 - 3 Enjoy your usual outdoor activities. Ideal air quality for outdoor activities.
Moderate 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 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 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.

* People with heart or breathing problems are at greater risk. Follow your doctor's usual advice about exercising and managing your condition.