When the AQI is above 100, it can affect sensitive groups like children, older adults, and people with pre-existing lung or ...
The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) ...
The index ranges from 0 to 500 and uses a color ... According to the experts, one reason AQI levels had returned to normal early this week was because the fires were producing less smoke.