The Air Quality Index (AQI) — which measures the concentration of pollutants in the air — seemed to confirm all was well in the L.A. atmosphere, with low numbers that suggested clean ...

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 ...

The Air Quality Index, set by the Environmental Protection Agency, is your guide to how bad the air quality is outdoors. The data that goes into the Air Quality Index comes from 5,000 air monitors ...

Air pollution affects 99% of the global population, causing 7 million premature deaths annually. Major pollutants include ...

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 ...

This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

AQI levels deteriorated after being in the 'moderate' category until February 9, it was 265 at 7 am on February 12, according ...

In the wake of the Palisades and Eaton fires, concerns about air quality across the county have been on the rise.

An air quality alert was issued on Tuesday at 5:03 a.m. for Josephine County.

The city experienced ‘poor' air quality on Tuesday with an air quality index (AQI) of 237, against Monday's reading of 219.