AQHI
Low
Risk
2

Monitoring

Air Quality Health Index

The AQHI provides a number from 1 to 10+ to indicate the level of health risk associated with local air quality. Occasionally, when the amount of air pollution is extremely high, the number may exceed 10, such as air quality associated with wild fire smoke.



The higher the AQHI number, the greater the health risk and need to take precautions. The index describes the level of health risk associated with this number as ‘low’, ‘moderate’, ‘high’ or ‘very high’, and suggests steps we can take to reduce our exposure.

The AQHI is a guide to the relative health risk presented by a mixture of common air pollutants known to harm human health. These pollutants are Ground-level Ozone (O3), Particulate Matter (PM2.5), and Nitrogen Dioxide (NO2). More...

The AQHI also forecasts health risks from air quality for today and tomorrow and provides associated health advice. The Index does not measure the effects of pollen, heat or humidity on health. You can refer to the AQHI to check the quality of outdoor air 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.

Learn more about AQHI

Get Involved

As an airshed, educating about air quality is an essential part of what we do. It is important to us as an organization to inform through not only sharing air quality data but also providing tips on how we can all do our part to reduce air pollution and serve as environmental stewards at an individual level.

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