Indicators like the Air Quality Index (AQI), commonly used to track air pollution levels, provide a rough sense of the pollution floating in the skies. But those types of indicators don't capture some ...

Angelenos still bothered by the smell of smoke may be surprised to see that Air Quality Index numbers returned to “healthy” or “moderate” levels this week in L.A. County, but they shouldn ...

Share on Pinterest If you live in an area where you may be exposed to wildfire smoke, check your local Air Quality Index (AQI) before exercising outdoors. Jay L. Clendenin/Getty Images Wildfire ...

Here's how to tell if you're in an area at risk. What is the Air Quality Index, or AQI? The Air Quality Index, often referred to as AQI, is a federal measure of the amount of air pollution ...

The USA TODAY analysis focused on days were the Air Quality Index, or AQI, was above 100. At this point, breathing the air primarily poses a risk to sensitive groups but can also impact healthy ...

Arizona is the only state with an air quality index that falls in the “unhealthy” category. In 2021, Maricopa County had good air quality on only 4% of days. Air pollution in the Valley and ...