When the AQI is above 100, it can affect sensitive groups like children, older adults, and people with pre-existing lung or ...

The index ranges from 0 to 500 and uses a color coded system: As of Monday evening, the AQI was between 30 and 60 throughout L.A. County — in the “good” or “moderate” range — according ...

AQI uses a scale from 0 to 500, with readings below 50 considered "Good" and above 300 classified as "Hazardous," signaling emergency conditions where health risks are elevated for everyone.

However, reading and interpreting AQI is a bit of a guessing game. The AQI scale ranges from 0 to 500 and includes different tiers associated with various health risks for different groups of people.

Smoke from the blaze has significantly worsened air quality statewide, with some areas reporting hazardous levels exceeding 500 on the Air Quality Index (AQI). California has always been ...