The Commission for Air Quality Management in the National Capital Region on Wednesday invoked Stage 3 measures of the Graded ...

Specialized air quality instruments captured a spike in lead, chlorine, and bromine pollution during the L.A. wildfires. As fires burned tens of thousands of acres across Los Angeles County, officials ...

New recommendations on how to define obesity would reduce the emphasis on body mass index and take into account health ...

Indicators like the Air Quality Index (AQI), commonly used to track air pollution levels, provide a rough sense of the ...

The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) ...

The agency runs calculations on the readings to determine the air quality index, or AQI, which can represent current conditions and averages over the next 24 hours. The AQI, which ranges from 0 to ...

In Santa Monica’s waterfront Palisades Park, the air was fresh enough for people to jog. Air quality, measured on a scale from good to hazardous, was good to moderate on Monday and mostly good ...

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 ...

Photo by Jules Hotz for CalMatters. 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.

Tens of thousands of people have evacuated their homes and at least two have died in raging fires sweeping across Los Angeles County Wednesday. Multiple wildfires spread by strong Santa Ana winds ...