Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

A more accurate way of measuring this pollution would be through its AQI, a tool that measures the quality of air at various levels. A reading of 450-500 is what Delhi is recording at the moment ...

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

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

The EPA collects data for the AQI from some 4,000 air quality monitoring stations dotted around the country. But air quality can vary on a hyperlocal scale, meaning the network of official sites is ...

Support LAist by giving now. 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 ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily more accurate.