What is the Air Quality Health Index (AQHI)?

The Air Quality Health Index, or AQHI is a scale designed to help you understand what the air quality around you means to your health. It is a health tool 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 air pollution.

How is the AQHI calculated?

The AQHI is calculated based on the relative risks of a combination of common air pollutants known to harm human health. These pollutants are:

● Ozone (O₃) at ground level,

● Particulate Matter (PM_2.5/PM₁₀) and

● Nitrogen Dioxide (NO₂)